Patent US3003772A successfully refreshed from Google Patents.
US3003772A
Expired / Lapsed
US
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Transducer assembly
Assignee: Gray Manufacturing Co Inc
•
Filing: 1957-09-19
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Granted: 1961-10-10
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Expires: 1977-09-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Chester A Snow
- 👤 Arthur A Klebba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:23
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/02; G11B3/10; G11B3/12; G11B3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1742085A
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US1895126A
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US1936389A
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GB417927A
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US2329526A
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US2369087A
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GB618814A
Cited
US2551506A
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US2587529A
Cited
US2676806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |