US1816504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doorlock actuating mechanism
Assignee: PHILIP E CARLSON
•
Filing: 1929-01-07
•
Granted: 1931-07-28
•
Expires: 1949-01-07
Abstract
No abstract record available.
Inventors
- 👤 Carl J Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:36
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/06; E05B47/0657; E05B47/0665; E05B47/0669; E05B47/0001; E05B47/0002; E05B2047/0007; E05B47/0006; Y; Y10; Y10S; Y10S292/00; Y10S292/03; Y10S292/24; Y10T; Y10T70/00; Y10T70/60; Y10T70/70; Y10T70/7051; Y10T70/7062; Y10T70/713
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1934-07-27 | 1935-01-26 | 1935-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-07-27 | 1939-01-26 | 1939-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-07-27 | 1943-01-26 | 1943-07-28 | $7700.00 | Window Closed / Lapsed |