US2824440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Panic exit lock
Assignee: DETROIT HARDWARE Manufacturing CO
•
Filing: 1953-03-05
•
Granted: 1958-02-25
•
Expires: 1973-03-05
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 07:48
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; E05B63/04; E05B65/1093; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0848; Y10T292/0849; Y10T292/0853; Y10T292/0908; Y10T292/20; Y10T292/205; Y10T292/212; Y10T292/214; Y10T292/54; Y10T292/564; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5159; Y10T70/5199; Y10T70/5246; Y10T70/5248; Y10T70/5283
Claims Analysis
Total Claims: 0
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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) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |