Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9044896 | Gusseter board with retractable nose | Robert J. Tewksbury | 2015-06-02 |
| D674853 | Hosel for a golf putter | — | 2013-01-22 |
| D674451 | Hosel and head portion of golf putter | — | 2013-01-15 |
| 7976400 | Golf putter with adjustable lie | — | 2011-07-12 |
| 7779738 | Pivot punch | Robert J. Tewksbury, Mark Clark | 2010-08-24 |
| 6196827 | Swing arm stabilizing cage | — | 2001-03-06 |
| 6148710 | Slitter-punch with quick adapter | — | 2000-11-21 |
| 6113026 | Bow spreader bar | — | 2000-09-05 |
| 5942256 | Bubble stabilizer and sizing cage with wear strips | — | 1999-08-24 |
| 5700489 | Bubble stabilizer and sizing cage with wear strips | — | 1997-12-23 |
| 5585120 | Extriuded metal collapsing boards with replaceable wear plates | — | 1996-12-17 |
| 5143367 | Rotary vacuum wicketter with removable split wearplates | — | 1992-09-01 |
| 4943226 | Cover for collapsing board | — | 1990-07-24 |
| 4898082 | Molded plastic air cylinder | — | 1990-02-06 |
| 4877233 | Rotary vacuum wicketter | — | 1989-10-31 |
| 4852442 | Self-sharpening perforator for plastic film | — | 1989-08-01 |
| 4723466 | Self-sharpening hole punch for packaging with resilient waste expelling mechanism | — | 1988-02-09 |
| 4653372 | Self-sharpening hole punch for plastic bags | — | 1987-03-31 |