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US2531368A
Expired / Lapsed
US
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Shock absorber
Assignee: American Steel Foundries
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Filing: 1944-06-30
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Granted: 1950-11-21
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Expires: 1964-06-30
Abstract
No abstract record available.
Inventors
- 👤 Carl E Tack
- 👤 Fred E Bachman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:24
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/32; B64C25/58; B64C25/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1291016A
Cited
US1918697A
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US2057893A
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US2078364A
Cited
GB452895A
Cited
US2089656A
Cited
GB496059A
Cited
US2138513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |