US2695103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of centrifugal extraction
Assignee: U S HOFFMAN MACHINERY CORP
•
Filing: 1950-03-08
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Granted: 1954-11-23
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Expires: 1970-03-08
Abstract
No abstract record available.
Inventors
- 👤 Francis J Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:16
CPC Classifications
F; F26; F26B; F26B5/00; F26B5/08; Y; Y10; Y10S; Y10S60/00; Y10S60/908
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1902972A
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US2311924A
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US2517452A
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US2513844A
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US2513845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-22 | 1958-05-24 | 1958-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-22 | 1962-05-24 | 1962-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-22 | 1966-05-24 | 1966-11-23 | $7700.00 | Window Closed / Lapsed |