Patent US1920868A successfully refreshed from Google Patents.
US1920868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latch operating means
Assignee: Individual
•
Filing: 1932-06-16
•
Granted: 1933-08-01
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Expires: 1952-06-16
Abstract
No abstract record available.
Inventors
- 👤 Noel R Kirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:27
CPC Classifications
E; E05; E05F; E05F3/00; E05F3/04; E05F3/06; Y; Y10; Y10S; Y10S70/00; Y10S70/48; Y10T; Y10T292/00; Y10T292/03; Y10T292/08; Y10T292/096; Y10T292/1014; Y10T292/1021; Y10T292/54
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) | 1936-07-31 | 1937-01-30 | 1937-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-07-31 | 1941-01-30 | 1941-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-07-31 | 1945-01-30 | 1945-08-01 | $7700.00 | Window Closed / Lapsed |