Patent US3270630A successfully refreshed from Google Patents.
Patent US2886990A successfully refreshed from Google Patents.
US2886990A
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Apparatus for rolling gears
Assignee: Nachi Machining Technology Co
•
Filing: 1954-08-30
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Granted: 1959-05-19
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Expires: 1974-08-30
Abstract
No abstract record available.
Inventors
- 👤 Benjamin F Bregi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:38
CPC Classifications
B; B21; B21H; B21H5/00; B21H5/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49462; Y10T29/49467; Y10T29/49471
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |