US2660929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of shaving gears
Assignee: Nachi Machining Technology Co
•
Filing: 1949-01-13
•
Granted: 1953-12-01
•
Expires: 1969-01-13
Abstract
No abstract record available.
Inventors
- 👤 Walter S Praeg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:20
CPC Classifications
B; B23; B23F; B23F19/00; B23F19/06; Y; Y10; Y10T; Y10T409/00; Y10T409/10; Y10T409/101431; Y10T409/10477; Y10T409/105088; Y10T409/105247
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2157981A
Cited
US2282193A
Cited
DE698881C
Cited
US2318179A
Cited
US2434482A
Cited
US2372444A
Cited
US2499167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |