US2677814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical permutation lock
Assignee: Individual
•
Filing: 1950-09-05
•
Granted: 1954-05-04
•
Expires: 1970-09-05
Abstract
No abstract record available.
Inventors
- 👤 Harry C Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:44
CPC Classifications
G; G07; G07C; G07C9/00; G07C9/00174; G07C9/00658; G07C9/00674; G07C9/0069; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7051; Y10T70/7062; Y10T70/7102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE279338C
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US1290644A
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FR540268A
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US2139079A
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US1736761A
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US1923968A
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US1905965A
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US2095688A
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US2197802A
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US2436809A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |