US3497731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bender type transducers
Assignee: General Dynamics Corp
•
Filing: 1967-09-19
•
Granted: 1970-02-24
•
Expires: 1987-09-19
Abstract
No abstract record available.
Inventors
- 👤 Helmut J Straube
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:43
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0603
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2928068A
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US3002179A
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US3255431A
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US3230503A
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US3281770A
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US3281769A
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US3284761A
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US3382841A
Cited
US3427481A
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US3353150A
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US3337843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |