US2457431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable-speed transmission
Assignee: Rexnord Industries LLC
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Filing: 1944-09-30
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Granted: 1948-12-28
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Expires: 1964-09-30
Abstract
No abstract record available.
Inventors
- 👤 Alfred G Bade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:10
CPC Classifications
F; F16; F16H; F16H15/00; F16H15/48; F16H15/50; F16H15/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-28 | 1952-06-28 | 1952-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-28 | 1956-06-28 | 1956-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-28 | 1960-06-28 | 1960-12-28 | $7700.00 | Window Closed / Lapsed |