US2528511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jig
Assignee: Individual
•
Filing: 1946-02-04
•
Granted: 1950-11-07
•
Expires: 1966-02-04
Abstract
No abstract record available.
Inventors
- 👤 David L Graham
- 👤 Richards Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:14
CPC Classifications
B; B24; B24B; B24B23/00; B24B23/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1527357A
Cited
US1785737A
Cited
US1799109A
Cited
US1933677A
Cited
US1996825A
Cited
US2261696A
Cited
US2289874A
Cited
US2400783A
Cited
US2412199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |