Patent US5436641A successfully refreshed from Google Patents.
Patent US2604899A successfully refreshed from Google Patents.
US2604899A
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Progressive liquid apparatus
Assignee: Individual
•
Filing: 1950-05-08
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Granted: 1952-07-29
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Expires: 1970-05-08
Abstract
No abstract record available.
Inventors
- 👤 John A Fitzgibbons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:16
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/20; F; F16; F16K; F16K15/00; F16K15/02; F16K15/06; F16K15/063; F16K15/065; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2562; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/7791; Y10T137/7837; Y10T137/7859; Y10T137/7904; Y10T137/7922; Y10T137/7925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |