US3363191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data transmission amplifier
Assignee: Western Union Telegraph Co
•
Filing: 1964-11-23
•
Granted: 1968-01-09
•
Expires: 1984-11-23
Abstract
No abstract record available.
Inventors
- 👤 John E Boughtwood
- 👤 Harris Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:50
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/34; H03F3/343; H04; H04L; H04L25/00; H04L25/02; H04L25/10; H04L25/0264; H04L25/0272; H04L25/0274
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3078379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |