US2645932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Testing of plastic flow
Assignee: Standard Oil Co
•
Filing: 1949-07-30
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Granted: 1953-07-21
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Expires: 1969-07-30
Abstract
No abstract record available.
Inventors
- 👤 Frederick H Maclaren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:34
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/20; G01N2203/00; G01N2203/0014; G01N2203/0023; G01N2203/0058; G01N2203/0092; G01N2203/0094; G01N2203/02; G01N2203/022; G01N2203/0222
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1763400A
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US1827805A
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US2252464A
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US2293488A
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US2185340A
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US2259491A
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US2283730A
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US2510952A
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US2504985A
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US2479984A
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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) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |