Patent US3288940A successfully refreshed from Google Patents.
US3288940A
Expired / Lapsed
US
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Multifrequency signal receiver
Assignee: Automatic Electric Laboratories Inc
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Filing: 1963-10-24
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Granted: 1966-11-29
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Expires: 1983-10-24
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Bennett
- 👤 Ronald F Kowalik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:49
CPC Classifications
H; H04; H04Q; H04Q1/00; H04Q1/18; H04Q1/30; H04Q1/44; H04Q1/444; H04Q1/45; H04Q1/453
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
A SIGNAL RECEIVER FOR SENSING MULTIFREQUENCY SIGNAL BURSTS EACH COMPRISING FREQUENCIES FROM A PLURALITY OF FREQUENCY GROUPS, SAID RECEIVER INCLUDING MEANS FOR SEPARATING SAID SIGNAL BURSTS INTO THEIR COMPONENT FREQUENCIES, MEANS FOR DETECTING SAID COMPONENT FREQUENCIES, AND MEANS FOR PREVENTING SIGNAL BURST SIMULATION, SAID LASTMENTIONED MEANS COMPRISING: FIRST MEANS CONNECTED TO AND CONTROLLED BY SAID DETECT-
References Cited (Backward Citations)
US3035250A
Cited
US3128349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |