Patent US2414376A successfully refreshed from Google Patents.
Patent US2738489A successfully refreshed from Google Patents.
US2738489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary car button controls for automatic passenger elevators
Assignee: Schindler Haughton Elevator Corp
•
Filing: 1953-06-29
•
Granted: 1956-03-13
•
Expires: 1973-06-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Borden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:42
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/34; B66B1/46; B66B1/461; B66B1/462; H; H01; H01H; H01H13/00; H01H13/02; H01H13/023; H01H2239/00; H01H2239/066
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |