US2590069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical surge discharge power unit
Assignee: SHUREFLASH LAB Inc
•
Filing: 1950-07-12
•
Granted: 1952-03-18
•
Expires: 1970-07-12
Abstract
No abstract record available.
Inventors
- 👤 Charles C Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:52
CPC Classifications
F; F21; F21K; F21K5/00; F21K5/02; F21K5/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1658976A
Cited
US2151806A
Cited
US2393966A
Cited
US2470895A
Cited
US2507226A
Cited
US2498640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |