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US2844761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage transformer
Assignee: US Philips Corp
•
Filing: 1955-09-26
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Granted: 1958-07-22
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Expires: 1975-09-26
Abstract
No abstract record available.
Inventors
- 👤 Nieswaag Johannes
- 👤 Smits Hubertus Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:35
CPC Classifications
H; H01; H01F; H01F38/00; H01F38/42; H01F27/00; H01F27/40; H01F30/00; H01F30/06; H01F30/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2301238A
Cited
US2459422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |