Patent US1964911A successfully refreshed from Google Patents.
US3021074A
Expired / Lapsed
US
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Electroic triode bridge multiplier
Assignee: ExxonMobil Oil Corp
•
Filing: 1957-05-08
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Granted: 1962-02-13
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Expires: 1977-05-08
Abstract
No abstract record available.
Inventors
- 👤 Goethe M Groenendyke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:41
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/16; G06G7/164
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1449382A
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US1535674A
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US2040341A
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US2173910A
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US2088059A
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FR853324A
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US2271519A
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US2428541A
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US2580148A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |