Patent US2451968A successfully refreshed from Google Patents.
US2451968A
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Magnetostrictive electroacoustic transducer
Assignee: RCA Corp
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Filing: 1940-01-03
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Granted: 1948-10-19
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Expires: 1960-01-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Alexander Murdoch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:13
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/08; B06B1/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US768568A
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US1591068A
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FR613799A
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US2374637A
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US2063949A
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US2407256A
Cited
US2405472A
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US2014413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |