US1818807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed reducer
Assignee: Individual
•
Filing: 1930-02-12
•
Granted: 1931-08-11
•
Expires: 1950-02-12
Abstract
No abstract record available.
Inventors
- 👤 John M Mann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:50
CPC Classifications
F; F16; F16H; F16H29/00; F16H29/02; F16H29/08; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1503; Y10T74/1508; Y10T74/1511; Y10T74/1513; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/206
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) | 1934-08-10 | 1935-02-09 | 1935-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-08-10 | 1939-02-09 | 1939-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-08-10 | 1943-02-09 | 1943-08-11 | $7700.00 | Window Closed / Lapsed |