US2620465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for electric voltage and current regulation
Assignee: Individual
•
Filing: 1948-02-25
•
Granted: 1952-12-02
•
Expires: 1968-02-25
Abstract
No abstract record available.
Inventors
- 👤 Giroz Henri Edmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:38
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1181556A
Cited
US2310886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |