US2552504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage regulator testing apparatus
Assignee: Individual
•
Filing: 1946-01-29
•
Granted: 1951-05-08
•
Expires: 1966-01-29
Abstract
No abstract record available.
Inventors
- 👤 Karl E Lugosch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:08
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/14; H02P9/20; H02P9/22; G; G01; G01R; G01R31/00; G01R31/40
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1367845A
Cited
US1857149A
Cited
US1789031A
Cited
US2084086A
Cited
US2270554A
Cited
US2430381A
Cited
US2450012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |