US3517175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital signal comparators
Assignee: Plessey Overseas Ltd
•
Filing: 1967-08-15
•
Granted: 1970-06-23
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Expires: 1987-08-15
Abstract
No abstract record available.
Inventors
- 👤 Raymond T F Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:59
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/02; G06F17/00; G06F17/10; G06F17/15; G06G; G06G7/00; G06G7/12; G06G7/19; G06G7/1928; G06G7/1935; G06J; G06J1/00; G06J1/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2615127A
Cited
US2641696A
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US2831987A
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US3174032A
Cited
US3139523A
Cited
US3376411A
Cited
US3299291A
Cited
US3346844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |