US2846255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door locks
Assignee: Sargent Manufacturing Co
•
Filing: 1957-01-30
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Granted: 1958-08-05
•
Expires: 1977-01-30
Abstract
No abstract record available.
Inventors
- 👤 Jr George W Wardwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:46
CPC Classifications
E; E05; E05B; E05B55/00; E05B55/005; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0977; Y10T292/0987; Y10T292/0989; Y10T292/099; Y10T292/88; Y10T292/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US348656A
Cited
US2297077A
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US2491783A
Cited
US2756582A
Cited
US2568273A
Cited
US2694918A
Cited
US2800347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |