Patent US2289539A successfully refreshed from Google Patents.
US2985445A
Expired / Lapsed
US
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Pneumatic spring control device
Assignee: Motors Liquidation Co
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Filing: 1957-06-20
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Granted: 1961-05-23
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Expires: 1977-06-20
Abstract
No abstract record available.
Inventors
- 👤 Phillip C Bowser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:50
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/02; B60G17/04; B60G17/048; B60G17/0485; B60G17/052; B60G17/0521; Y; Y10; Y10S; Y10S280/00; Y10S280/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1544850A
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US2147990A
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US2271823A
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US2361575A
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US2607611A
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US2670201A
Cited
US2874957A
Cited
US2844386A
Cited
US2888273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |