US2481990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door latch
Assignee: Individual
•
Filing: 1946-07-10
•
Granted: 1949-09-13
•
Expires: 1966-07-10
Abstract
No abstract record available.
Inventors
- 👤 John C Ehrke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:55
CPC Classifications
E; E05; E05C; E05C3/00; E05C3/12; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0908; Y10T292/0911; Y10T292/0926; Y10T292/0928; Y10T292/0929; Y10T292/0945; Y10T292/0951; Y10T292/0959
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) | 1952-09-12 | 1953-03-14 | 1953-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-12 | 1957-03-14 | 1957-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-12 | 1961-03-14 | 1961-09-13 | $7700.00 | Window Closed / Lapsed |