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US2841722A
Expired / Lapsed
US
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Bending-responsive electromechanical transducer device
Assignee: Clevite Corp
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Filing: 1953-03-18
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Granted: 1958-07-01
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Expires: 1973-03-18
Abstract
No abstract record available.
Inventors
- 👤 Charles K Gravley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:27
CPC Classifications
H; H04; H04R; H04R17/00; H04R17/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2047252A
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US2395434A
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US2524579A
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US2484950A
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US2479987A
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US2633543A
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US2497108A
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US2614143A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |