US2499158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide inlet rotary pump for circulating liquids under vacuum
Assignee: Eastman Kodak Co
•
Filing: 1946-10-14
•
Granted: 1950-02-28
•
Expires: 1966-10-14
Abstract
No abstract record available.
Inventors
- 👤 Edmond S Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:13
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/10; F04C2/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US345969A
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US788848A
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US834384A
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US1035468A
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US1442787A
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US1603395A
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AU754127A
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US1890152A
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US1900735A
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US2105259A
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US2147777A
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US2146395A
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US2386896A
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US2240056A
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US2291354A
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US2434135A
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US2416987A
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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) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |