US3024053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emergency door lock
Assignee: DAVID R NEILL
•
Filing: 1959-09-28
•
Granted: 1962-03-06
•
Expires: 1979-09-28
Abstract
No abstract record available.
Inventors
- 👤 David E Cox
- 👤 Claude D Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:03
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/10; E05B65/1046; E05B65/1053; E05B65/1006; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0822; Y10T292/0908
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) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |