Patent US3424054A successfully refreshed from Google Patents.
US3424054A
Expired / Lapsed
US
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Method of machining metals and apparatus therefor
Assignee: Lockheed Martin Corp
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Filing: 1965-06-14
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Granted: 1969-01-28
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Expires: 1985-06-14
Abstract
No abstract record available.
Inventors
- 👤 Nathan H Cook
- 👤 Robert L Vaughn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:21
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/10; B23Q11/1007; Y; Y10; Y10T; Y10T407/00; Y10T407/14; Y10T409/00; Y10T409/30; Y10T409/303752; Y10T409/303976; Y10T409/304032
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2854387A
Cited
US2873232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |