US2665453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber blending apparatus
Assignee: Proctor and Schwartz Inc
•
Filing: 1950-05-26
•
Granted: 1954-01-12
•
Expires: 1970-05-26
Abstract
No abstract record available.
Inventors
- 👤 John H Senior
- 👤 Harmon B Riehl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:49
CPC Classifications
D; D01; D01G; D01G13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US551800A
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US1346828A
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US1856287A
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US1929344A
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US2107458A
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US2055412A
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US2227175A
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US2261842A
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US2467291A
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US2412506A
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US2433790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |