US2579424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring low temperature stiffening of elastomers
Assignee: Wingfoot Corp
•
Filing: 1948-06-08
•
Granted: 1951-12-18
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Expires: 1968-06-08
Abstract
No abstract record available.
Inventors
- 👤 Samuel D Gehman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:27
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/22; G01N2203/00; G01N2203/02; G01N2203/022; G01N2203/0222; G01N2203/0228
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |