US3052846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical measuring instruments
Assignee: National Research Development Corp UK
•
Filing: 1958-10-28
•
Granted: 1962-09-04
•
Expires: 1978-10-28
Abstract
No abstract record available.
Inventors
- 👤 Hill Joseph James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:30
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/02; G01R19/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB216338A
Cited
US1765563A
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US2283566A
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US2577111A
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FR834436A
Cited
GB520976A
Cited
US2284547A
Cited
US2444027A
Cited
US2866159A
Cited
US2850698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |