US2270752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Percussion device
Assignee: Individual
•
Filing: 1939-09-11
•
Granted: 1942-01-20
•
Expires: 1959-09-11
Abstract
No abstract record available.
Inventors
- 👤 William M Drennon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:11
CPC Classifications
B; B25; B25D; B25D11/00; B25D11/06; B25D11/10; B25D16/00; B25D2211/00; B25D2211/06; B25D2211/062
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-01-19 | 1945-07-21 | 1946-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-01-19 | 1949-07-21 | 1950-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-01-19 | 1953-07-21 | 1954-01-20 | $7700.00 | Window Closed / Lapsed |