US2852729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-voltage power supply
Assignee: Tracerlab Inc
•
Filing: 1953-03-23
•
Granted: 1958-09-16
•
Expires: 1973-03-23
Abstract
No abstract record available.
Inventors
- 👤 Walter P Kern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:18
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/17; G01T1/175
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2637011A
Cited
US1959010A
Cited
US2306888A
Cited
FR893135A
Cited
US2431051A
Cited
US2435414A
Cited
US2459638A
Cited
US2591942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |