US2980966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of molding a gear finishing tool
Assignee: Nachi Machining Technology Co
•
Filing: 1958-09-29
•
Granted: 1961-04-25
•
Expires: 1978-09-29
Abstract
No abstract record available.
Inventors
- 👤 Walter S Praeg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:41
CPC Classifications
B; B23; B23F; B23F21/00; B23F21/03; B24; B24D; B24D5/00; Y; Y10; Y10S; Y10S264/00; Y10S264/71
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB243518A
Cited
US2874412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |