Patent US3801535A successfully refreshed from Google Patents.
US3801535A
Expired / Lapsed
US
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Damping means
Assignee: Telefunken Patentverwertungs GmbH
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Filing: 1972-06-08
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Granted: 1974-04-02
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Expires: 1992-06-08
Abstract
Abstract SOLID SLICONES HAVING A SHORE A HARDNESS OF MUCH LESS THAN 15 AT A TEMPERATURE BELOW 50*C. DAMP MECHANICAL VIBRATIONS AND ARE PARTICULARLY USEFUL IN THIS REGARD FOR SOUND PICKUPS.
Inventors
- 👤 G Joschko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:46
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16; C08G77/18; C08G77/22; C08G77/24; C08G77/70; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |