US2459920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door locking means
Assignee: Individual
•
Filing: 1946-03-04
•
Granted: 1949-01-25
•
Expires: 1966-03-04
Abstract
No abstract record available.
Inventors
- 👤 Clark John Ashley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:27
CPC Classifications
E; E05; E05B; E05B13/00; E05B13/10; E05B13/101; Y; Y10; Y10T; Y10T292/00; Y10T292/85; Y10T292/88; Y10T70/00; Y10T70/50; Y10T70/5611; Y10T70/5757; Y10T70/5765; Y10T70/5805; Y10T70/5819; Y10T70/5823; Y10T70/5827
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) | 1952-01-25 | 1952-07-26 | 1953-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-25 | 1956-07-26 | 1957-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-25 | 1960-07-26 | 1961-01-25 | $7700.00 | Window Closed / Lapsed |