US903805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic friction-brake mechanism for elevators or hoists.
Assignee: ENERGY ELEVATOR Co
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Filing: 1908-07-03
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Granted: 1908-11-10
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Expires: 1928-07-03
Abstract
No abstract record available.
Inventors
- 👤 Adolph G Wuest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:37
CPC Classifications
F; F16; F16D; F16D67/00; F16D67/02
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) | 1911-11-10 | 1912-05-11 | 1912-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-11-10 | 1916-05-11 | 1916-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-11-10 | 1920-05-11 | 1920-11-10 | $7700.00 | Window Closed / Lapsed |