US3020352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single sideband equipment for speech transmission
Assignee: US Philips Corp
•
Filing: 1957-03-15
•
Granted: 1962-02-06
•
Expires: 1977-03-15
Abstract
No abstract record available.
Inventors
- 👤 Jager Frank De
- 👤 Greefkes Johannes Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:47
CPC Classifications
G; G10; G10L; G10L25/00; G10L25/78; H; H04; H04B; H04B1/00; H04B1/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1948973A
Cited
US2210957A
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US2215482A
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US2231958A
Cited
US2237899A
Cited
US2543807A
Cited
US2632800A
Cited
US2810787A
Cited
US2859338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |