US2641088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Worm gear lapping apparatus
Assignee: North American Aviation Corp
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Filing: 1949-09-26
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Granted: 1953-06-09
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Expires: 1969-09-26
Abstract
No abstract record available.
Inventors
- 👤 Doyle E Wilcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:14
CPC Classifications
B; B23; B23F; B23F23/00; B23F23/12; B23F23/1218; B23F11/00; B23F19/00; B23F19/02; Y; Y10; Y10T; Y10T29/00; Y10T29/47; Y10T29/477; Y10T409/00; Y10T409/30; Y10T409/300056; Y10T409/300112
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) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |