US3199536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-position electromagnetic valve
Assignee: Union Tank Car Co
•
Filing: 1960-09-01
•
Granted: 1965-08-10
•
Expires: 1980-09-01
Abstract
No abstract record available.
Inventors
- 👤 Richard G Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:18
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/86606; Y10T137/86614; Y10T137/87153; Y10T137/87161; Y10T137/87265; Y10T137/87322; Y10T137/87338; Y10T137/87362; Y10T137/8737; Y10T137/8741; Y10T137/87507; Y10T137/877; Y10T137/87708; Y10T137/87764
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |