US2898775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable gear drive
Assignee: E R D LAB Inc
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Filing: 1955-02-08
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Granted: 1959-08-11
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Expires: 1975-02-08
Abstract
No abstract record available.
Inventors
- 👤 Reid Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:55
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/21; B21C23/211; F; F16; F16H; F16H27/00; F16H27/04; F16H27/08; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19555; Y10T74/1987; Y10T74/19874
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) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |