Class B23G : THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
Subclass 1/20: Thread cutting; Automatic machines specially designed therefor in holes of workpieces by taps (B23G 1/26, B23G 1/32, B23G 1/36 take precedence) Machines with a plurality of working-spindles
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 9630262 | Method of manufacturing member having closed-bottom hole portion, and working tool | Jan 31, 11 | Apr 25, 17 | TOYO TANSO CO., LTD. |
| 8977382 | Automatic method for milling complex channel-shaped cavities | May 11, 12 | Mar 10, 15 | D.P. TECHNOLOGY CORP. |
| 5480270 | Clutch for threading attachment | May 02, 94 | Jan 02, 96 | Brinkman Products, Inc. |
| 5199692 | Clamp device drive apparatus | Mar 22, 91 | Apr 06, 93 | PASCAL CORPORATION |
| Upgrade to the Professional Level to view Top Owners for this Subclass.Learn More |
|---|
