US3404341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrometer utilizing a dual purpose field-effect transistor
Assignee: Xerox Corp
•
Filing: 1964-04-03
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Granted: 1968-10-01
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Expires: 1984-04-03
Abstract
No abstract record available.
Inventors
- 👤 James E Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:11
CPC Classifications
G; G01; G01R; G01R29/00; G01R29/24; G01R5/00; G01R5/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2659864A
Cited
US2787742A
Cited
US2836797A
Cited
US3204160A
Cited
US3158027A
Cited
US3170126A
Cited
US3229120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |