Patent US1860333A successfully refreshed from Google Patents.
US1860333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure operating mechanism
Assignee: Otis Elevator Co
•
Filing: 1929-04-18
•
Granted: 1932-05-24
•
Expires: 1949-04-18
Abstract
No abstract record available.
Inventors
- 👤 Dunn Edward Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:42
CPC Classifications
B; B66; B66B; B66B13/00; B66B13/02; B66B13/06; B66B13/08; E; E05; E05F; E05F1/00; E05F1/02; Y; Y10; Y10S; Y10S16/00; Y10S16/17
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1935-05-24 | 1935-11-23 | 1936-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-05-24 | 1939-11-23 | 1940-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-05-24 | 1943-11-23 | 1944-05-24 | $7700.00 | Window Closed / Lapsed |