Patent US3230694A successfully refreshed from Google Patents.
Patent US2932309A successfully refreshed from Google Patents.
US2932309A
Expired / Lapsed
US
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Liquid supply systems such as fuel systems
Assignee: Rotol Ltd
•
Filing: 1954-02-12
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Granted: 1960-04-12
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Expires: 1974-02-12
Abstract
No abstract record available.
Inventors
- 👤 Godden Thomas Edward
- 👤 Morris Edward Hollingworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:52
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/06; F16K15/063; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516; Y10T137/2559; Y10T137/2564; Y10T137/4673; Y10T137/7287; Y10T137/7358; Y10T137/7361; Y10T137/8593; Y10T137/85978; Y10T137/86131; Y10T137/86163; Y10T137/86928
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1618436A
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US1776877A
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US1888866A
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US2203980A
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GB556212A
Cited
US2394431A
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US2503424A
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US2551836A
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US2535094A
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US2564306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |