US2443100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic device
Assignee: Electrons Inc
•
Filing: 1945-03-13
•
Granted: 1948-06-08
•
Expires: 1965-03-13
Abstract
No abstract record available.
Inventors
- 👤 Donald V Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:29
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1999736A
Cited
US1999597A
Cited
US2113163A
Cited
US2148578A
Cited
US2097578A
Cited
US2125799A
Cited
US2250819A
Cited
US2234690A
Cited
US2394535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |