Patent US2844977A successfully refreshed from Google Patents.
US2844977A
Expired / Lapsed
US
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Magnetic alignment tools
Assignee: Boeing Co
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Filing: 1957-01-24
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Granted: 1958-07-29
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Expires: 1977-01-24
Abstract
No abstract record available.
Inventors
- 👤 William L Morse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:13
CPC Classifications
B; B23; B23B; B23B49/00; B23B49/02; B23B49/026; B23B2215/00; B23B2215/04; B23B2226/00; B23B2226/33; B23B2260/00; B23B2260/10; Y; Y10; Y10T; Y10T408/00; Y10T408/03; Y10T408/55; Y10T408/553; Y10T408/554; Y10T408/567
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) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |