Patent US3606295A successfully refreshed from Google Patents.
US3606295A
Expired / Lapsed
US
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Shock absorber
Assignee: Unilan AG
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Filing: 1969-10-17
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Granted: 1971-09-20
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Expires: 1989-10-17
Abstract
Abstract A SPRING OR SHOCK ABSORBER ADAPTED FOR VEHICLE SUSPENSION SYSTEMS AND THE LIKE COMPRISING A STACK OF ELASTOMERIC DISCS LYING ONE ON THE OTHER AND AN AXIALLY EXTENDING BORE THROUGH THE STACK FILLED WITH A FLEXIBLE PLASTIC FOAM WHICH JOINS THE DISCS TOGETHER INTO A UNITARY STRUCTURE.
Inventors
- 👤 Bernard Simon Appleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:25
CPC Classifications
F; F16; F16F; F16F3/00; F16F3/08; F16F3/087; F16F3/093; B; B60; B60G; B60G11/00; B60G11/22; B60G2202/00; B60G2202/10; B60G2202/14; B60G2202/143; B60G2204/00; B60G2204/10; B60G2204/12; B60G2204/125; B60G2204/40; B60G2204/45; B60G2204/4504
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |