Leonard Kleinrock Autographs
Leonard Kleinrock (born June 13, 1934) is an American computer scientist and Internet pioneer. He is Distinguished Professor Emeritus of Computer Science at UCLA's Henry Samueli School of Engineering and Applied Science. Kleinrock made several important contributions to the field of computer science, in particular to the mathematical foundations of data communication in computer networking. He has received numerous prestigious awards.
In the early 1960s, Kleinrock pioneered the application of queueing theory to model delays in message switching networks in his Ph.D. thesis, published as a book in 1964. In the late 1960s and 1970s, he played an influential role in the development of the ARPANET. In the 1970s, he applied queueing theory to model and measure the performance of packet switching networks and published several of the standard works on the subject. He supervised graduate students who worked on the communication protocols for the ARPANET including students whose later work on internetworking and the Internet protocol suite led to the networking technology employed in the Internet. His theoretical work on hierarchical routing in the late 1970s with student Farouk Kamoun remains critical to the operation of the Internet today.
Leonard Kleinrock was born in New York City on June 13, 1934, to a Jewish family, and graduated from the noted Bronx High School of Science in 1951. He received a Bachelor of Electrical Engineering degree in 1957 from the City College of New York, and a master's degree and a doctorate (Ph.D.) in electrical engineering and computer science from the Massachusetts Institute of Technology (MIT) in 1959 and 1963 respectively. He then joined the faculty at the University of California at Los Angeles (UCLA), where he remains to the present day; during 1991–1995 he served as the chairman of the Computer Science Department there.
Read more about Leonard Kleinrock on Wikipedia
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Current items with a signature of Leonard Kleinrock
These are the most current items with a signature of Leonard Kleinrock that were listed on eBay and on other online stores - click here for more items.
| Picture | Item Title | Price | Store |
 | Leonard Kleinrock PSA/DNA Autographed Signed Business Card | $230.00 |  |
Traded items with a signature of Leonard Kleinrock
The most expensive item with a signature of Leonard Kleinrock (Leonard Kleinrock PSA/DNA Autographed Signed Business Card Developed ARPANET) was sold in April 2025 for $149.00 while the cheapest item (Leonard Kleinrock - Authentic SIGNED AUTOGRAPHED 4x6 Photo, Internet Developer) found a new owner for $0.99 in August 2014. The month with the most items sold (2) was February 2022 with an average selling price of $99.00 for an autographed item of Leonard Kleinrock. Sold items reached their highest average selling price in April 2025 with $149.00 and the month that saw the lowest prices with $0.99 was August 2014. In average, an autographed item from Leonard Kleinrock is worth $33.49.
Most recently, these items with a signature of Leonard Kleinrock were sold on eBay - click here for more items.
| Picture | Item Title | Price | Store |
 | Leonard Kleinrock Authentic Signed 8x10 Photo Autographed, Computer Scientist | $49.99 |  |
| Leonard Kleinrock Autographed Mat Piece! Internet Pioneer! ARPANET! UCLA! Rare! | $16.50 | |
| Leonard Kleinrock Autographed Signed Business Card Internet Pioneer | $99.00 | |
| Leonard Kleinrock Autographed Signed Business Card Internet Pioneer | $99.00 | |
| Leonard Kleinrock Father of the Internet Pioneer Signed 3x5 Index Card C12820 | $24.99 | |
| Leonard Kleinrock Father of the Internet Pioneer Signed 3x5 Index Card C14765 | $11.99 | |
| Leonard Kleinrock Father of the Internet Pioneer Signed 3x5 Index Card C16142 | $19.99 | |
| LEONARD KLEINROCK Hand Signed Autograph 4X6 Photo - INVENTOR ARPANET INTERNET | $17.50 | |
| Leonard Kleinrock pioneering computer scientist signed autographed photo packets | $39.95 | |
| Leonard Kleinrock pioneering computer scientist signed autographed photo packets | $39.95 | |
 | Leonard Kleinrock PSA/DNA Autographed Signed Business Card Developed ARPANET | $149.00 | |
| LEONARD KLEINROCK SIGNED AUTOGRAPHED 8x10 PHOTO INTERNET PIONEER BECKETT BAS | $85.00 | |
| Leonard Kleinrock Signed UCLA Business Card Internet Creator ARPANET Rare | $99.95 | |
| Leonard Kleinrock UCLA Professor Autographed Business Card | $33.49 | |
| LEONARD KLEINROCK “Real” Inventor of the Internet Signed Autographed Index Card | $9.99 | |
