US1475250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interwoven flat-belt-drive apparatus
Assignee: Otis Elevator Co
•
Filing: 1922-02-07
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Granted: 1923-11-27
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Expires: 1942-02-07
Abstract
No abstract record available.
Inventors
- 👤 Sundh August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:55
CPC Classifications
B; B66; B66B; B66B7/00; B66B7/06; B66B7/062; D; D07; D07B; D07B5/00; D07B5/04; D07B5/045; F; F16; F16G; F16G1/00; F16G1/04; D07B2501/00; D07B2501/20; D07B2501/2007; Y; Y10; Y10S; Y10S139/00; Y10S139/01
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) | 1926-11-26 | 1927-05-28 | 1927-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-11-26 | 1931-05-28 | 1931-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-11-26 | 1935-05-28 | 1935-11-27 | $7700.00 | Window Closed / Lapsed |