Patent US5448738A successfully refreshed from Google Patents.
Patent US3823169A successfully refreshed from Google Patents.
Patent US4498842A successfully refreshed from Google Patents.
Patent US2172824A successfully refreshed from Google Patents.
Patent US2504647A successfully refreshed from Google Patents.
US2504647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric induction meter system
Assignee: General Electric Co
•
Filing: 1947-12-06
•
Granted: 1950-04-18
•
Expires: 1967-12-06
Abstract
No abstract record available.
Inventors
- 👤 Camilli Guglielmo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:29
CPC Classifications
H; H01; H01F; H01F38/00; H01F38/20; H01F38/22; H01F38/28; H01F38/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-17 | 1953-10-17 | 1954-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-17 | 1957-10-17 | 1958-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-17 | 1961-10-17 | 1962-04-18 | $7700.00 | Window Closed / Lapsed |