Patent US2923780A successfully refreshed from Google Patents.
US2923780A
Expired / Lapsed
US
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Magnetic transducer and housing
Assignee: Raytheon Co
•
Filing: 1955-03-02
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Granted: 1960-02-02
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Expires: 1975-03-02
Abstract
No abstract record available.
Inventors
- 👤 Leon J Berman
- 👤 Abraham S Jacoby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:10
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/17; G11B5/10; G11B5/187; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49032; Y10T29/4906; Y10T29/49071
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2354018A
Cited
US2435871A
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US2658113A
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US2628286A
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US2769036A
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US2780742A
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US2756280A
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US2734941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |