US2870776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid proportioning system
Assignee: Sunoco Inc
•
Filing: 1954-06-21
•
Granted: 1959-01-27
•
Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Marsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:10
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/006; B; B01; B01F; B01F35/00; B01F35/80; B01F35/83; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516; Y10T137/2521; Y10T137/2559; Y10T137/2564; Y10T137/2574; Y10T137/2605
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1239617A
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US1926333A
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DE639264C
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US2024478A
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US2024480A
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US2145114A
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US2195005A
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US2310677A
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US2492990A
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US2664907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |