US3034707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broadcasting systems
Assignee: Communications Patents Ltd
•
Filing: 1958-03-13
•
Granted: 1962-05-15
•
Expires: 1978-03-13
Abstract
No abstract record available.
Inventors
- 👤 Jefferson Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:30
CPC Classifications
H; H04; H04H; H04H60/00; H04H60/35; H04H60/45
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2188165A
Cited
US2465976A
Cited
US2630366A
Cited
US2652310A
Cited
US2755162A
Cited
US2864941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |