US2421285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction type electricity meter
Assignee: Individual
•
Filing: 1943-05-07
•
Granted: 1947-05-27
•
Expires: 1963-05-07
Abstract
No abstract record available.
Inventors
- 👤 Prince John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:36
CPC Classifications
G; G01; G01R; G01R11/00; G01R11/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1194129A
Cited
US1798138A
Cited
US1962929A
Cited
GB441526A
Cited
GB455513A
Cited
US2209969A
Cited
US2323465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-26 | 1950-11-25 | 1951-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-26 | 1954-11-25 | 1955-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-26 | 1958-11-25 | 1959-05-27 | $7700.00 | Window Closed / Lapsed |