US2789672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch and variable speed drive provided with automatic acceleration and deceleration mechanism for punch and blanking presses and the like
Assignee: PREC FLEXOPRESS CORP
•
Filing: 1953-07-27
•
Granted: 1957-04-23
•
Expires: 1973-07-27
Abstract
No abstract record available.
Inventors
- 👤 Ewell W Forkner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:17
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/12; F; F16; F16D; F16D11/00; F16D11/02; F16D11/04; F16D67/00; F16D67/02; F16H; F16H61/00; F16H61/66; F16H61/662
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2492284A
Cited
US1491006A
Cited
US1724588A
Cited
US1716594A
Cited
US2078196A
Cited
US2089711A
Cited
US2512816A
Cited
US2503425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |