US2447031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid dosing apparatus
Assignee: Individual
•
Filing: 1944-12-08
•
Granted: 1948-08-17
•
Expires: 1964-12-08
Abstract
No abstract record available.
Inventors
- 👤 Harry A Rush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:10
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/686; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/8593; Y10T137/87571; Y10T137/87676; Y10T137/87684
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1044653A
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US1185626A
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US1720326A
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US1897492A
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US1905244A
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US1949934A
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US1943487A
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GB382646A
Cited
GB370842A
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US2049530A
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US2128721A
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US2224101A
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US2302097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-17 | 1952-02-16 | 1952-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-17 | 1956-02-16 | 1956-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-17 | 1960-02-16 | 1960-08-17 | $7700.00 | Window Closed / Lapsed |