Patent US6187043B1 successfully refreshed from Google Patents.
US2864892A
Expired / Lapsed
US
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Transducer mounting
Assignee: Unisys Corp
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Filing: 1954-04-07
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Granted: 1958-12-16
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Expires: 1974-04-07
Abstract
No abstract record available.
Inventors
- 👤 Robert L Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:13
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/004; F; F16; F16B; F16B9/00; F16B9/05; F16B9/054; F16B9/056
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1883561A
Cited
US2343440A
Cited
US2475007A
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US2587097A
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US2596839A
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US2721743A
Cited
US2786897A
Cited
US2644856A
Cited
US2708693A
Cited
US2668879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |