US2867768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ammeter
Assignee: ROCHESTER Manufacturing CO Inc
•
Filing: 1953-01-19
•
Granted: 1959-01-06
•
Expires: 1973-01-19
Abstract
No abstract record available.
Inventors
- 👤 Austin E Fribance
- 👤 Robert A Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:51
CPC Classifications
G; G01; G01R; G01R11/00; G01R11/02; Y; Y10; Y10S; Y10S116/00; Y10S116/35
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US414866A
Cited
US1193096A
Cited
US2139997A
Cited
US1723035A
Cited
US1761917A
Cited
US1805447A
Cited
US2284045A
Cited
US2446431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |