Patent US4761968B1 successfully refreshed from Google Patents.
US3373689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive displacement pump
Assignee: Dover Corp
•
Filing: 1966-06-08
•
Granted: 1968-03-19
•
Expires: 1986-06-08
Abstract
No abstract record available.
Inventors
- 👤 Virgil A Brunson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:33
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/24; F04C14/26; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3266425A
Cited
US3021790A
Cited
US3059580A
Cited
US3106166A
Cited
US3146720A
Cited
US3140049A
Cited
US3195556A
Cited
US3270675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |