US2525019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for opening doors of locked enclosures from within
Assignee: Individual
•
Filing: 1948-03-13
•
Granted: 1950-10-10
•
Expires: 1968-03-13
Abstract
No abstract record available.
Inventors
- 👤 Mae F Doherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:18
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/0042; E05B65/0053; E05B63/00; E05B63/24; E05B63/248; E05B15/00; E05B15/02; E05B15/0205; E05B15/024; E05B15/0245; Y; Y10; Y10S; Y10S292/00; Y10S292/65; Y10T; Y10T292/00; Y10T292/175; Y10T292/18; Y10T292/68; Y10T292/705
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1634013A
Cited
US1853243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |