Patent US4139898A successfully refreshed from Google Patents.
Patent US2437128A successfully refreshed from Google Patents.
US2437128A
Expired / Lapsed
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Variable-speed transmission
Assignee: Individual
•
Filing: 1945-05-28
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Granted: 1948-03-02
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Expires: 1965-05-28
Abstract
No abstract record available.
Inventors
- 👤 William K Rieber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:04
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B19/26; G11B19/265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1308556A
Cited
US687428A
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US922802A
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US1038131A
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US1296604A
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US1368587A
Cited
US2047733A
Cited
US2167641A
Cited
US2352238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-02 | 1951-09-01 | 1952-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-02 | 1955-09-01 | 1956-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-02 | 1959-09-01 | 1960-03-02 | $7700.00 | Window Closed / Lapsed |