Patent US2180474A successfully refreshed from Google Patents.
US2180474A
Expired / Lapsed
US
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Variable speed transmission
Assignee: LEECE NEVILLE CO
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Filing: 1937-05-22
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Granted: 1939-11-21
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Expires: 1957-05-22
Abstract
No abstract record available.
Inventors
- 👤 Bennett M Leece
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:28
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/02; F; F16; F16H; F16H61/00; F16H61/02; F16H61/0202; F16H2716/00; F16H2716/08
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) | 1942-11-20 | 1943-05-22 | 1943-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-11-20 | 1947-05-22 | 1947-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-11-20 | 1951-05-22 | 1951-11-21 | $7700.00 | Window Closed / Lapsed |