US3470325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video signal encoding technique for reduced bandwidth transmission
Assignee: Southern Pacific Co
•
Filing: 1966-10-31
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Granted: 1969-09-30
•
Expires: 1986-10-31
Abstract
No abstract record available.
Inventors
- 👤 Hugh F Frohbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:02
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/41; H04N1/411; H04N1/413; H04N1/4135; H03; H03M; H03M1/00; H03M1/12; H03M1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2963698A
Cited
US3243507A
Cited
US3333109A
Cited
US3369229A
Cited
US3414677A
Cited
US3394312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |