Patent US2970267A successfully refreshed from Google Patents.
US2970267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical measuring instrument
Assignee: —
•
Filing: —
•
Granted: 1961-01-31
•
Expires: 1978-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:57
CPC Classifications
G; G01; G01R; G01R5/00; G01R5/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1660285A
Cited
US2102409A
Cited
US2422714A
Cited
US2668945A
Cited
US2710377A
Cited
US2547248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |