US2660897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infinitely-variable change-speed gear
Assignee: DABO Ltd
•
Filing: 1951-05-16
•
Granted: 1953-12-01
•
Expires: 1971-05-16
Abstract
No abstract record available.
Inventors
- 👤 Neidhart Martin
- 👤 Koller Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:55
CPC Classifications
F; F16; F16H; F16H15/00; F16H15/02; F16H15/04; F16H15/06; F16H15/32; F16H15/36; F16H15/38; F16H15/26; F16H15/28; F16H2015/383
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US767604A
Cited
US1775201A
Cited
US1878068A
Cited
US2109845A
Cited
US2134225A
Cited
GB476589A
Cited
DE683063C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |