US2654944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making gears
Assignee: Universal Railway Devices Co
•
Filing: 1950-04-10
•
Granted: 1953-10-13
•
Expires: 1970-04-10
Abstract
No abstract record available.
Inventors
- 👤 Wilson Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:25
CPC Classifications
B; B21; B21K; B21K23/00; B21K1/00; B21K1/28; B21K1/30; F; F16; F16H; F16H55/00; F16H55/02; F16H55/17; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49462; Y10T29/49467; Y10T29/49474; Y10T74/00; Y10T74/19; Y10T74/19949; Y10T74/19963
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1668442A
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US1689219A
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US1812150A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |