US2472545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for testing voltage regulators
Assignee: Stone J and Co Ltd
•
Filing: 1944-11-24
•
Granted: 1949-06-07
•
Expires: 1964-11-24
Abstract
No abstract record available.
Inventors
- 👤 Nixon Leslie Reginald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:19
CPC Classifications
G; G05; G05B; G05B23/00; G05B23/02; G01; G01R; G01R31/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1600176A
Cited
US1857149A
Cited
US1825491A
Cited
US1842323A
Cited
US1946774A
Cited
US2374417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |