US1720971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spur-gear speed-increasing and speed-reducing standard device in which the distance between centers and the gear ratio are variable
Assignee: Compagnie Engrenages et Reducteurs Messian Durand SA
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Filing: 1927-09-30
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Granted: 1929-07-16
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Expires: 1947-09-30
Abstract
No abstract record available.
Inventors
- 👤 Schweich Roger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:44
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/02; F16H2057/02086; F16H2700/00; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/1956; Y10T74/19565; Y10T74/1957; Y10T74/21; Y10T74/2186
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) | 1932-07-15 | 1933-01-14 | 1933-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-07-15 | 1937-01-14 | 1937-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-07-15 | 1941-01-14 | 1941-07-16 | $7700.00 | Window Closed / Lapsed |