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US2911249A
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Automatically-latching upper lock bolt unit for panic exit locks
Assignee: DETROIT HARDWARE Manufacturing CO
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Filing: 1958-02-21
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Granted: 1959-11-03
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Expires: 1978-02-21
Abstract
No abstract record available.
Inventors
- 👤 Deane N Jewett
- 👤 John H Gesing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:02
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/10; E05B65/1006; E05B65/1013; E05B63/00; E05B63/18; E05B63/20; E05B65/1046; E05B65/106; E05B65/1066; E05B65/1093; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0908; Y10T292/54; Y10T292/564
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |