Patent US3460576A successfully refreshed from Google Patents.
US3460576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulating control valve device
Assignee: Westinghouse Air Brake Co
•
Filing: 1966-12-28
•
Granted: 1969-08-12
•
Expires: 1986-12-28
Abstract
No abstract record available.
Inventors
- 👤 Clifford W Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:41
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F15B2211/00; F15B2211/40; F15B2211/405; F15B2211/40515; F15B2211/415; F15B2211/41509; F15B2211/42; F15B2211/421; F15B2211/423; F15B2211/45; F15B2211/50; F15B2211/505; F15B2211/50554; F15B2211/52; F15B2211/528; F15B2211/57; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7053; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86919
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |