Patent US2646859A successfully refreshed from Google Patents.
US2646859A
Expired / Lapsed
US
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Piston assembly for shock absorbers
Assignee: Tenneco Automotive Inc
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Filing: 1949-06-30
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Granted: 1953-07-28
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Expires: 1969-06-30
Abstract
No abstract record available.
Inventors
- 👤 Charles E Read
- 👤 Jr Ralph H Whisler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:47
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/32; F16F9/36; F16F9/368
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1172315A
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US1596445A
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US1923011A
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US1930687A
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US1958489A
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US2018312A
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US2225986A
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US2351662A
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US2346275A
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US2579058A
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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) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |