US2624769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ammeter with swinging permanent magnet
Assignee: Stackpole Carbon Co
•
Filing: 1948-04-23
•
Granted: 1953-01-06
•
Expires: 1968-04-23
Abstract
No abstract record available.
Inventors
- 👤 John E Diehl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:29
CPC Classifications
G; G01; G01R; G01R5/00; G01R5/14; G01R5/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US348648A
Cited
US425069A
Cited
US1452591A
Cited
US683668A
Cited
US1192821A
Cited
US1333422A
Cited
US1680465A
Cited
US1749366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-06 | 1956-07-07 | 1957-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-06 | 1960-07-07 | 1961-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-06 | 1964-07-07 | 1965-01-06 | $7700.00 | Window Closed / Lapsed |