Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6820787 | Stapler | Valentin Fridmanovich | 2004-11-23 |
| 6536646 | Stapler | Valentin Fridmanovich | 2003-03-25 |
| 4305541 | Electronically operated portable nail gun | Edward E. Barrett, Dusan Dubovsky, Steven Jay Hahn, Albert Lensky | 1981-12-15 |
| 4293088 | Electronically operated portable fastener driving tool | Edward E. Barrett, Steven Jay Hahn, Albert Lensky, Seymour Sobelman | 1981-10-06 |
| 4183453 | Electronically operated portable fastener driving tool | Edward E. Barrett, Albert Lensky, Paul Olesen, Christian F. Becker, Wilfredo Febre +1 more | 1980-01-15 |