US2471001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined ohmmeter and illumination meter
Assignee: Weston Electric Instrument Corp
•
Filing: 1944-10-02
•
Granted: 1949-05-24
•
Expires: 1964-10-02
Abstract
No abstract record available.
Inventors
- 👤 John H Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:24
CPC Classifications
G; G01; G01R; G01R1/00; G01R1/30; G01J; G01J1/00; G01J1/42; G01J1/4209; G01R27/00; G01R27/02
Claims Analysis
Total Claims: 0
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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) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |