US2959868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Worm gear drive
Assignee: Rice Barton Corp
•
Filing: 1957-04-17
•
Granted: 1960-11-15
•
Expires: 1977-04-17
Abstract
No abstract record available.
Inventors
- 👤 Everett W Clem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:31
CPC Classifications
F; F16; F16C; F16C13/00; F16C13/02; D; D21; D21F; D21F5/00; D21F5/02; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19126; Y10T74/1913; Y10T74/21; Y10T74/2173; Y10T74/2185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1149206A
Cited
US1479128A
Cited
US1520935A
Cited
DE650406C
Cited
US2479406A
Cited
US2530941A
Cited
DE870060C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |