Patent US3265970A successfully refreshed from Google Patents.
US3265970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical input measuring device using ion drag pumps and pressure indication
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1962-05-28
•
Granted: 1966-08-09
•
Expires: 1982-05-28
Abstract
No abstract record available.
Inventors
- 👤 Otmar M Stuetzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:56
CPC Classifications
H; H01; H01J; H01J41/00; H01J41/02; G; G01; G01R; G01R15/00; G01R15/14; G01R19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A DEVICE FOR MEASURING AN ELECTRICAL QUANTITY COMPRISING PRESSURE MEASURING MEANS, MEANS DEFINING A CLOSED FLOW PATH FOR AN INSULATING LIQUID, AN INSULATING LIQUID SUBSTANTIALLY FILLING SAID CLOSED FLOW PATH, A PAIR OF DIFFERENTIAL ION DRAG PUMPS POSITIONED IN SAID INSULATING LIQUID ARRANGED IN OPPOSITION AND EFFECTING THEREBY OPPOSED INDEPENDENT ION DRAGS ON SAID INSULATING LIQUID WHEN SAID PUMPS ARE ENERGIZED, MEANS FOR CONNECTING THE ELECTRICAL
Claim 2
Independent Claim
66 words
A DEVICE FOR MEASURING AN ELECTRICAL QUANTITY COMPRISING PRESSURE MEASURING MEANS, MEANS DEFINING A CLOSED FLOW PATH FOR AN INSULATING LIQUID, AN INSULATING LIQUID SUBSTANTIALLY FILLING SAID CLOSED FLOW PATH, A PAIR OF DIFFERENTIAL ION DRAG PUMPS POSITIONED IN SAID INSULATING LIQUID ARRANGED IN OPPOSITION AND EFFECTING THEREBY OPPOSED INDEPENDENT ION DRAGS ON SAID INSULATING LIQUID WHEN SAID PUMPS ARE ENERGIZED, MEANS FOR CONNECTING THE ELECTRICAL
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |