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US2970832A
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Hydropneumatic suspension systems
Assignee: Armstrong Patents Co Ltd
•
Filing: 1959-12-08
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Granted: 1961-02-07
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Expires: 1979-12-08
Abstract
No abstract record available.
Inventors
- 👤 Wordsworth Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:20
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/06; B; B60; B60G; B60G11/00; B60G11/26; B60G17/00; B60G17/02; B60G17/033; B60G17/04; B60G17/044; B60G21/00; B60G21/02; B60G21/06; B60G21/073; Y; Y10; Y10S; Y10S280/00; Y10S280/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2825579A
Cited
US2923557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |