US2983228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Viking Pump Inc
•
Filing: 1959-01-26
•
Granted: 1961-05-09
•
Expires: 1979-01-26
Abstract
No abstract record available.
Inventors
- 👤 Anthony A Wagner
- 👤 Robert C Wyth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:38
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/10; F04C2/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1009759A
Cited
US1407496A
Cited
US1840869A
Cited
US1665120A
Cited
US1990750A
Cited
GB394985A
Cited
US1993721A
Cited
US2291354A
Cited
US2270222A
Cited
US2336294A
Cited
US2760438A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |