Patent US2869389A successfully refreshed from Google Patents.
US2869389A
Expired / Lapsed
US
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Rack gear with improved method of making
Assignee: Individual
•
Filing: 1954-12-27
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Granted: 1959-01-20
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Expires: 1974-12-27
Abstract
No abstract record available.
Inventors
- 👤 Proefke Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:35
CPC Classifications
B; B23; B23F; B23F19/00; B23F19/002; B23F1/00; B23F1/02; B23F23/00; B23F23/02; B23F23/06; F; F16; F16H; F16H55/00; F16H55/02; F16H55/26; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19949; Y10T74/19963; Y10T74/19972
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US5647A
Cited
US618272A
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US2128815A
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US2346865A
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US2347998A
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US2335504A
Cited
GB561714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |