US3213797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal pumps
Assignee: Individual
•
Filing: 1964-10-27
•
Granted: 1965-10-26
•
Expires: 1984-10-27
Abstract
No abstract record available.
Inventors
- 👤 Kenton D Mcmahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:53
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/02; F04D13/06; F04D13/0606; F04D13/0613; F04D1/00; F04D1/06; F04D1/063; F04D1/066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A CENTRIFUGAL LIQUID PUMP HAVING AN IMPELLER AND A HUB FOR SAID IMPELLER, THE GASES ENTRAINED IN THE LIQUID BEING SEPARATED FROM THE LIQUID AND BEING COLLECTED NEAR SAID HUB BY CENTRIPETAL ACTION, AND PUMP MEANS SEPARATE FROM SAID IMPELLER AND RESPONSIVE TO MOTIVE POWER SUPPLIED BY THE LIQUID PUMPED FOR DRAWING THE GASES COLLECTED
Claim 2
Dependent Claim
55 words
A CENTRIFUGAL LIQUID PUMP HAVING AN IMPELLER AND A HUB FOR SAID IMPELLER, THE GASES ENTRAINED IN THE LIQUID BEING SEPARATED FROM THE LIQUID AND BEING COLLECTED NEAR SAID HUB BY CENTRIPETAL ACTION, AND PUMP MEANS SEPARATE FROM SAID IMPELLER AND RESPONSIVE TO MOTIVE POWER SUPPLIED BY THE LIQUID PUMPED FOR DRAWING THE GASES COLLECTED
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |