Patent US2682809A successfully refreshed from Google Patents.
US2682809A
Expired / Lapsed
US
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Key cutting machine
Assignee: Individual
•
Filing: 1952-01-18
•
Granted: 1954-07-06
•
Expires: 1972-01-18
Abstract
No abstract record available.
Inventors
- 👤 May Bertram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:22
CPC Classifications
B; B23; B23C; B23C3/00; B23C3/28; B23C3/35; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/300952
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US999610A
Cited
US1081471A
Cited
US1410683A
Cited
US1462150A
Cited
US1860160A
Cited
US1803428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |