Patent US3474808A successfully refreshed from Google Patents.
US3474808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure valve for reciprocating pumps
Assignee: TESORO PUMP & VALVE Co A CORP OF
•
Filing: 1967-04-05
•
Granted: 1969-10-28
•
Expires: 1987-04-05
Abstract
No abstract record available.
Inventors
- 👤 Robert E Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:20
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B53/1087; F04B53/102; F04B53/1022; F04B53/1027; F16; F16K; F16K15/00; F16K15/02; F16K15/06; F16K15/063; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6154; Y10T137/7504; Y10T137/7559; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7932; Y10T137/7933
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US143345A
Cited
US243256A
Cited
US2327600A
Cited
US2594641A
Cited
US2776056A
Cited
US2804281A
Cited
US2969804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |