US2959440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emergency exit door and lock mechanism therefor
Assignee: Individual
•
Filing: 1958-07-30
•
Granted: 1960-11-08
•
Expires: 1978-07-30
Abstract
No abstract record available.
Inventors
- 👤 Daniel C Hay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:24
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/10; E05B65/1006; E05B65/1013; E05B65/1046; E05B65/106; E05B65/1066; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0822; Y10T292/0908; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5159
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732241A
Cited
US1069075A
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US2125227A
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US2117715A
Cited
US2625812A
Cited
US2616132A
Cited
US2591647A
Cited
US2824440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |