Patent US3534183A successfully refreshed from Google Patents.
US3534183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer with shock absorbing mounting
Assignee: Individual
•
Filing: 1969-06-26
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Granted: 1970-10-13
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Expires: 1989-06-26
Abstract
No abstract record available.
Inventors
- 👤 Hugh S Knowles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:07
CPC Classifications
H; H04; H04R; H04R25/00; H04R25/60; H04R25/604; H04R1/00; H04R1/20; H04R1/22; H04R1/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2506981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |