US3533855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical measurement devices
Assignee: FRANCIS A LYDON
•
Filing: 1965-03-17
•
Granted: 1970-10-13
•
Expires: 1985-03-17
Abstract
No abstract record available.
Inventors
- 👤 Albert Lederman
- 👤 Francis A Lydon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:27
CPC Classifications
G; G01; G01R; G01R21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1726182A
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US3128428A
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US1618744A
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US2410128A
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US2922955A
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US3052846A
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US3026363A
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US3048643A
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US3304206A
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US3342646A
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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) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |