US2794955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrometer apparatus
Assignee: —
•
Filing: —
•
Granted: 1957-06-04
•
Expires: 1974-06-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:01
CPC Classifications
G; G01; G01R; G01R5/00; G01R5/28; G01R29/00; G01R29/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1042440A
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US1140432A
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US1177800A
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US1855669A
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US2136018A
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GB497728A
Cited
US2303845A
Cited
US2187541A
Cited
US2482801A
Cited
US2550546A
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US2567276A
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US2659863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |