US2608993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid flow controlling valve
Assignee: PIATT PRODUCTS Corp
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Filing: 1948-10-25
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Granted: 1952-09-02
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Expires: 1968-10-25
Abstract
No abstract record available.
Inventors
- 👤 Andrews Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:01
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0166; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7297; Y10T137/73; Y10T137/7358; Y10T137/7439; Y10T137/7465; Y10T137/8593; Y10T137/86236; Y10T137/86292
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) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |