US3203442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gate valve construction
Assignee: Individual
•
Filing: 1961-11-02
•
Granted: 1965-08-31
•
Expires: 1981-11-02
Abstract
No abstract record available.
Inventors
- 👤 Marvin H Grove
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:51
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/04; F16K27/044; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6065; Y10T137/6072; Y10T137/6079
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
IN A GATE VALVE CONSTRUCTION, A VALVE BODY HAVING ALIGNED OPENINGS IN ITS SIDE WALLS, A GATE COMPRISING SEPARATE SOLID AND PORTED PORTIONS FOR ARRESTING FLOW AND ESTABLISHING FLOW THROUGH SAID BODY RESPECTIVELY, MEANS FOR DETACHABLY SECURING SAID PORTIONS TOGETHER, AT LEAST ONE OF SAID OPENINGS BEING OF A DIAMETER GREATER THAN
Claim 2
Dependent Claim
52 words
IN A GATE VALVE CONSTRUCTION, A VALVE BODY HAVING ALIGNED OPENINGS IN ITS SIDE WALLS, A GATE COMPRISING SEPARATE SOLID AND PORTED PORTIONS FOR ARRESTING FLOW AND ESTABLISHING FLOW THROUGH SAID BODY RESPECTIVELY, MEANS FOR DETACHABLY SECURING SAID PORTIONS TOGETHER, AT LEAST ONE OF SAID OPENINGS BEING OF A DIAMETER GREATER THAN
References Cited (Backward Citations)
US1960127A
Cited
US2344747A
Cited
US2636713A
Cited
US2982514A
Cited
US3038489A
Cited
US3158352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |