US2640541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power stop device for power presses
Assignee: Buffalo Forge Co
•
Filing: 1950-03-15
•
Granted: 1953-06-02
•
Expires: 1970-03-15
Abstract
No abstract record available.
Inventors
- 👤 Arthur T Yates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:13
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/28; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8759; Y10T83/8761
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US301238A
Cited
US1133025A
Cited
US1203171A
Cited
US1650411A
Cited
US1793611A
Cited
US2062692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |