US1902547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary bolt doorlock
Assignee: Individual
•
Filing: 1932-03-15
•
Granted: 1933-03-21
•
Expires: 1952-03-15
Abstract
No abstract record available.
Inventors
- 👤 Waldemar A Endter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:31
CPC Classifications
E; E05; E05C; E05C3/00; E05C3/12; E05C3/16; E05C3/22; E05C3/36; Y; Y10; Y10S; Y10S292/00; Y10S292/23; Y10S292/40; Y10T; Y10T292/00; Y10T292/08; Y10T292/1039; Y10T292/1041; Y10T292/1043; Y10T292/1044; Y10T292/1045; Y10T292/1075; Y10T292/1078; Y10T292/306; Y10T292/307
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) | 1936-03-20 | 1936-09-19 | 1937-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-03-20 | 1940-09-19 | 1941-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-03-20 | 1944-09-19 | 1945-03-21 | $7700.00 | Window Closed / Lapsed |