US2641822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swage rifling method
Assignee: Motors Liquidation Co
•
Filing: 1945-08-21
•
Granted: 1953-06-16
•
Expires: 1965-08-21
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Sampson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:17
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/152; B21C37/153; Y; Y10; Y10T; Y10T407/00; Y10T407/16; Y10T409/00; Y10T409/50; Y10T409/50082; Y10T409/502624; Y10T409/502788; Y10T409/502952
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US50133A
Cited
US338192A
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US1355422A
Cited
US1275028A
Cited
US2121832A
Cited
US2220757A
Cited
CH214422A
Cited
US2383356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |