US2144270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed transmission mechanism
Assignee: Individual
•
Filing: 1936-02-27
•
Granted: 1939-01-17
•
Expires: 1956-02-27
Abstract
No abstract record available.
Inventors
- 👤 Palmgren Nils Arvid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:09
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/02; F16H61/0262; F16H61/0265; F16H61/0267; F16H61/0269; F16H2200/00; F16H2200/20; F16H2200/203; F16H2200/2064; F16H2718/00; F16H2718/08; F16H2718/10; F16H2718/14; F16H61/68; F16H61/684; F16H61/686
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) | 1942-01-16 | 1942-07-18 | 1943-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-01-16 | 1946-07-18 | 1947-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-01-16 | 1950-07-18 | 1951-01-17 | $7700.00 | Window Closed / Lapsed |