US3420184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump employing magnetic drive
Assignee: Individual
•
Filing: 1967-05-17
•
Granted: 1969-01-07
•
Expires: 1987-05-17
Abstract
No abstract record available.
Inventors
- 👤 Julius L Englesberg
- 👤 Alfred Krell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:16
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/02; F04D13/021; F04D13/024; F04D13/027; F04D29/00; F04D29/04; F04D29/041; F04D29/0416; H; H02; H02K; H02K49/00; H02K49/10; H02K49/104; H02K49/108; H02K5/00; H02K5/04; H02K5/12; H02K5/128
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2638558A
Cited
US3107310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |