Patent US2944204A successfully refreshed from Google Patents.
US2944204A
Expired / Lapsed
US
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Charging device for electrometers
Assignee: GE Healthcare UK Ltd
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Filing: 1957-04-26
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Granted: 1960-07-05
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Expires: 1977-04-26
Abstract
No abstract record available.
Inventors
- 👤 John M Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:01
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/02; G01T1/14; G01T1/142; F; F23; F23Q; F23Q2/00; F23Q2/28; F23Q2/285; F23Q2/287; F23Q3/00; F23Q3/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1531595A
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US2044000A
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US2240293A
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US2759138A
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US2676273A
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US2691159A
Cited
US2717916A
Cited
US2717589A
Cited
US2782397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |