US3479525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Logarithmic signal compressor
Assignee: Unisys Corp
•
Filing: 1965-11-05
•
Granted: 1969-11-18
•
Expires: 1985-11-05
Abstract
No abstract record available.
Inventors
- 👤 Jack R Harford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:15
CPC Classifications
H; H03; H03G; H03G7/00; H03G7/06; G; G06; G06G; G06G7/00; G06G7/12; G06G7/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2975370A
Cited
US3127574A
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US3148332A
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US3212022A
Cited
US3162771A
Cited
US3218573A
Cited
US3281610A
Cited
US3361975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |