US3217080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroacoustical system
Assignee: Individual
•
Filing: 1960-04-01
•
Granted: 1965-11-09
•
Expires: 1980-04-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Melville Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:23
CPC Classifications
G; G10; G10K; G10K15/00; G10K15/08; G10K15/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
ELECTROACOUSTICAL APPARATUS COMPRISING, A SOURCE OF AN ELECTRICAL AUDIO INPUT SIGNAL, MEANS FOR COMBINING SAID AUDIO INPUT SIGNAL WITH A FEEDBACK SIGNAL TO PROVIDE A COMBINED SIGNAL INCLUDING A COMPONENT CONFORMING TO SAID AUDIO INPUT SIGNAL, MEANS FOR DELAYING SAID COMBINED SIGNAL TO PROVIDE A DELAYED COMBINED SIGNAL, MEANS DEFINING A FEEDBACK SIGNAL PATH AND RESPONSIVE TO SAID DELAYED COMBINED SIGNAL FOR PROVIDING SAID FEEDBACK SIGNAL, SAID FEEDBACK SIGNAL BEING RELATED TO SAID DELAYED COMBINED SIGNAL, TRANSDUCING MEANS RESPONSIVE TO AN ELECTRICAL SIGNAL FOR EXCITING CORRESPONDING PRESSURE VARIATIONS IN AN ACOUSTICAL MEDIUM, AND MEANS INTRODUCING A DELAY OF
Claim 2
Dependent Claim
98 words
ELECTROACOUSTICAL APPARATUS COMPRISING, A SOURCE OF AN ELECTRICAL AUDIO INPUT SIGNAL, MEANS FOR COMBINING SAID AUDIO INPUT SIGNAL WITH A FEEDBACK SIGNAL TO PROVIDE A COMBINED SIGNAL INCLUDING A COMPONENT CONFORMING TO SAID AUDIO INPUT SIGNAL, MEANS FOR DELAYING SAID COMBINED SIGNAL TO PROVIDE A DELAYED COMBINED SIGNAL, MEANS DEFINING A FEEDBACK SIGNAL PATH AND RESPONSIVE TO SAID DELAYED COMBINED SIGNAL FOR PROVIDING SAID FEEDBACK SIGNAL, SAID FEEDBACK SIGNAL BEING RELATED TO SAID DELAYED COMBINED SIGNAL, TRANSDUCING MEANS RESPONSIVE TO AN ELECTRICAL SIGNAL FOR EXCITING CORRESPONDING PRESSURE VARIATIONS IN AN ACOUSTICAL MEDIUM, AND MEANS INTRODUCING A DELAY OF
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |