Patents Issued in 1980
- December 30, 1980
- December 23, 1980
- December 16, 1980
- December 9, 1980
- December 2, 1980
- November 25, 1980
- November 18, 1980
- November 11, 1980
- November 4, 1980
- October 28, 1980
- October 21, 1980
- October 14, 1980
- October 7, 1980
- September 30, 1980
- September 23, 1980
- September 16, 1980
- September 9, 1980
- September 2, 1980
- August 26, 1980
- August 19, 1980
- August 12, 1980
- August 5, 1980
- July 29, 1980
- July 22, 1980
- July 15, 1980
- July 8, 1980
- July 1, 1980
- June 24, 1980
- June 17, 1980
- June 10, 1980
- June 3, 1980
- May 27, 1980
- May 20, 1980
- May 13, 1980
- May 6, 1980
- April 29, 1980
- April 22, 1980
- April 15, 1980
- April 8, 1980
- April 1, 1980
- March 25, 1980
- March 18, 1980
- March 11, 1980
- March 4, 1980
- February 26, 1980
- February 19, 1980
- February 12, 1980
- February 5, 1980
- January 29, 1980
- January 22, 1980
- January 15, 1980
- January 8, 1980
- January 1, 1980