US3043914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single channel stereophonic system
Assignee: Lanteris Space LLC
•
Filing: 1958-10-20
•
Granted: 1962-07-10
•
Expires: 1978-10-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold B Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:38
CPC Classifications
H; H04; H04H; H04H20/00; H04H20/86; H04H20/88
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2100236A
Cited
US2760132A
Cited
US2619547A
Cited
US2611036A
Cited
US2852763A
Cited
US2801336A
Cited
US2808508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |