US2809541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Obstruction detector for heading machine
Assignee: Remington Arms Co LLC
•
Filing: 1953-11-16
•
Granted: 1957-10-15
•
Expires: 1973-11-16
Abstract
No abstract record available.
Inventors
- 👤 Jack C Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:42
CPC Classifications
B; B21; B21J; B21J13/00; Y; Y10; Y10T; Y10T83/00; Y10T83/081; Y10T83/088; Y10T83/525
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US135763A
Cited
US1555596A
Cited
US23735A
Cited
US1360410A
Cited
US1683661A
Cited
US2274583A
Cited
US2366960A
Cited
US2542988A
Cited
US2348644A
Cited
US2398320A
Cited
US2493868A
Cited
US2425438A
Cited
US2464830A
Cited
US2499564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |