US2980390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary valve
Assignee: ANDERSON BRASS Co
•
Filing: 1958-01-02
•
Granted: 1961-04-18
•
Expires: 1978-01-02
Abstract
No abstract record available.
Inventors
- 👤 Ervin R Anderson
- 👤 Gerald H Kass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:02
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/02; F16K41/04; F16K41/043; F16K41/046; F16K5/00; F16K5/02; F16K5/0257; F16K5/0285; F16K5/08; F16K5/14; F16K5/16; F16K5/162; F16K5/166; Y; Y10; Y10S; Y10S277/00; Y10S277/91
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) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |