US2060299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical step-up device
Assignee: Individual
•
Filing: 1936-05-16
•
Granted: 1936-11-10
•
Expires: 1956-05-16
Abstract
No abstract record available.
Inventors
- 👤 Louis W Gensburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:32
CPC Classifications
H; H04; H04Q; H04Q9/00; H04Q9/04; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2133
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-11-10 | 1940-05-11 | 1940-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-11-10 | 1944-05-11 | 1944-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-11-10 | 1948-05-11 | 1948-11-10 | $7700.00 | Window Closed / Lapsed |