US2870871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock absorber
Assignee: National Research Council Canada
•
Filing: 1955-05-20
•
Granted: 1959-01-27
•
Expires: 1975-05-20
Abstract
No abstract record available.
Inventors
- 👤 Harry T Stevinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:44
CPC Classifications
F; F16; F16F; F16F7/00; F16F7/12; F16F7/123; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49877
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1698164A
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US1180095A
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US1331543A
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US1608780A
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US2254157A
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US2363249A
Cited
US2457205A
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US2576658A
Cited
US2607509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |