US2764889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for determining the brittle temperature of plastic materials
Assignee: Standard Oil Co
•
Filing: 1953-05-12
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Granted: 1956-10-02
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Expires: 1973-05-12
Abstract
No abstract record available.
Inventors
- 👤 Everett C Hughes
- 👤 Harley F Hardman
- 👤 Melvin M Fink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:23
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/02; G01N25/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2185340A
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US2528918A
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US2579424A
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US2645932A
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US2611264A
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US2670624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |