Patent US2596031A successfully refreshed from Google Patents.
US2596031A
Expired / Lapsed
US
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Pneumatic spring
Assignee: Individual
•
Filing: 1947-11-25
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Granted: 1952-05-06
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Expires: 1967-11-25
Abstract
No abstract record available.
Inventors
- 👤 Harold R Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:23
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/02; B60G17/04; B60G17/052; B60G17/0523; B60G17/0525; B60G17/048; B60G17/0485; F; F16; F16F; F16F15/00; F16F15/02; F16F15/023; F16F15/0232; F16F9/00; F16F9/02; F16F9/04; F16F9/0472
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1055734A
Cited
US1189511A
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US1414623A
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FR27276E
Cited
GB253787A
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US2018312A
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US2286563A
Cited
US2192355A
Cited
US2391841A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |