US3215398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mud valve
Assignee: Individual
•
Filing: 1963-01-07
•
Granted: 1965-11-02
•
Expires: 1983-01-07
Abstract
No abstract record available.
Inventors
- 👤 Calvin R Etris
- 👤 Clemens E Koenig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:41
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86348
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
IN A VALVE FOR A MUD TANK, A FRAMEWORK HAVING PARALLEL SIDE MEMBERS, A VERTICALLY MOVABLE TUBULAR ELBOW CONDUIT MOUNTED IN SAID FRAMEWORK, A LOWER SEAT MOUNTED IN SAID FRAMEWORK ANS AN UPPER SEAT MOUNTED IN SAID CONDUIT, MEANS FOR MOVING SAID CONDUIT VERTICALLY WITH RELATION TO SAID FRAMEWORK TO MOVE SAID UPPER SEAT INTO AND OUT OF SEATING RELATION WITH SAID LOWER SEAT.
Claim 2
Dependent Claim
64 words
IN A VALVE FOR A MUD TANK, A FRAMEWORK HAVING PARALLEL SIDE MEMBERS, A VERTICALLY MOVABLE TUBULAR ELBOW CONDUIT MOUNTED IN SAID FRAMEWORK, A LOWER SEAT MOUNTED IN SAID FRAMEWORK ANS AN UPPER SEAT MOUNTED IN SAID CONDUIT, MEANS FOR MOVING SAID CONDUIT VERTICALLY WITH RELATION TO SAID FRAMEWORK TO MOVE SAID UPPER SEAT INTO AND OUT OF SEATING RELATION WITH SAID LOWER SEAT.
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |