Patent US2714499A successfully refreshed from Google Patents.
US897537A
Expired / Lapsed
US
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Electric controlling mechanism.
Assignee: Otis Elevator Co
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Filing: 1905-07-29
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Granted: 1908-09-01
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Expires: 1925-07-29
Abstract
No abstract record available.
Inventors
- 👤 John D Ihlder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:51
CPC Classifications
B; B60; B60L; B60L50/00; B60L50/50; B60L50/52; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/70; Y02T10/72
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) | 1911-09-01 | 1912-03-02 | 1912-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-09-01 | 1916-03-02 | 1916-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-09-01 | 1920-03-02 | 1920-09-01 | $7700.00 | Window Closed / Lapsed |