US2907820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiplex transmission system
Assignee: US Philips Corp
•
Filing: 1953-07-31
•
Granted: 1959-10-06
•
Expires: 1973-07-31
Abstract
No abstract record available.
Inventors
- 👤 Teer Kees
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:32
CPC Classifications
H; H04; H04N; H04N9/00; H04N11/00; H04N11/02; H04N7/00; H04N7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1906269A
Cited
US2256317A
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US2352634A
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US2212808A
Cited
US2611826A
Cited
US2615986A
Cited
US2558489A
Cited
US2677720A
Cited
US2607035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |