US2927601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal flow valve
Assignee: VIKING INSTR Inc
•
Filing: 1957-01-03
•
Granted: 1960-03-08
•
Expires: 1977-01-03
Abstract
No abstract record available.
Inventors
- 👤 Martin Devereaux
- 👤 Fountain Henry
- 👤 James E Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:21
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/18; F16K15/182; F16K15/1821; Y; Y10; Y10T; Y10T137/00; Y10T137/5109; Y10T137/5283; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913; Y10T137/7915; Y10T137/7918; Y10T137/8593; Y10T137/877; Y10T137/87788; Y10T137/87812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US202785A
Cited
US1367911A
Cited
US2078315A
Cited
US2193270A
Cited
FR1002339A
Cited
US2641437A
Cited
US2777663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |