Patent EP0487384A1 successfully refreshed from Google Patents.
US3084585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simulated multiple rate gyrating modulator
Assignee: BALDWIN PIANO Co
•
Filing: 1959-12-11
•
Granted: 1963-04-09
•
Expires: 1979-12-11
Abstract
No abstract record available.
Inventors
- 👤 Jr William C Wayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:44
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/043; G10H1/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A DEVICE COMPRISING A SOURCE OF FREQUENCIES WITHIN THE AUDIO RANGE, AT LEAST TWO CHANNELS CONNECTED TO SAID SOURCE, A HIGH PASS FILTER IN EACH CHANNEL, EACH FILTER HAVING A RADICALLY DIFFERENT CUT-OFF FREQUENCY, EACH OF SAID CHANNELS HAVING AN ACOUSTIC TRANSDUCER, SAID TRANSDUCERS BEING MOVABLE ABOUT AT LEAST ONE AXIS TO PRODUCE A DOPPLER EFFECT.
Claim 2
Independent Claim
56 words
A DEVICE COMPRISING A SOURCE OF FREQUENCIES WITHIN THE AUDIO RANGE, AT LEAST TWO CHANNELS CONNECTED TO SAID SOURCE, A HIGH PASS FILTER IN EACH CHANNEL, EACH FILTER HAVING A RADICALLY DIFFERENT CUT-OFF FREQUENCY, EACH OF SAID CHANNELS HAVING AN ACOUSTIC TRANSDUCER, SAID TRANSDUCERS BEING MOVABLE ABOUT AT LEAST ONE AXIS TO PRODUCE A DOPPLER EFFECT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |