US2713422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined oil and water conditioner
Assignee: Fram Corp
•
Filing: 1951-04-06
•
Granted: 1955-07-19
•
Expires: 1971-04-06
Abstract
No abstract record available.
Inventors
- 👤 William S James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:46
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/005; B01D27/00; B01D27/02; B01D27/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US779859A
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US1121885A
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US1856771A
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US2289553A
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US2244574A
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US2353337A
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US2476405A
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US2371444A
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US2505393A
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US2447144A
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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) | 1958-07-18 | 1959-01-17 | 1959-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-18 | 1963-01-17 | 1963-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-18 | 1967-01-17 | 1967-07-19 | $7700.00 | Window Closed / Lapsed |