US2843740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency multi-channel generator
Assignee: US Philips Corp
•
Filing: 1955-05-03
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Granted: 1958-07-15
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Expires: 1975-05-03
Abstract
No abstract record available.
Inventors
- 👤 Mantz Marius Robert
- 👤 Starrveld Jaap
- 👤 Suermondt Henri Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:11
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H03; H03J; H03J7/00; H03J7/02; H03J7/04; H03J7/06; H03J7/065; H03L; H03L7/00; H03L7/06; H03L7/16; H03L7/22; H04J; H04J1/00; H04J1/02; H04J1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |