US3104729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereophonic sound reproducing loudspeaker system
Assignee: —
•
Filing: —
•
Granted: 1963-09-24
•
Expires: 1980-09-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:11
CPC Classifications
H; H04; H04R; H04R5/00; H04R5/02; H04R5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A UNITARY STEREOPHONIC LOUDSPEAKER SYSTEM FOR THE REPRODUCTION OF SOUND IN AUDITORY PRESPECTIVE, COMPRISING IN COMBINATION, UNITARY SPEAKER ENCLOSURE MEANS HAVING A FRONTAL AND TWO SPACED SIDE AREAS, A PLURALITY OF SPEAKER UNITS MOUNTED IN AND BAFFLED BY SAID ENCLOSURE MEANS IN STEREOPHONICALLY-RELATED PAIRS, ONE SPEAKER UNIT OF EACH PAIR BEING POSITIONED IN ONE OF SAID SIDE AREAS AND THE OTHER SPEAKER UNIT OF EACH PAIR BEING POSITIONED IN THE OTHER OF SAID SIDE AREAS, SAID SPEAKER PAIRS BEING MOUNTED IN DIFFERENT GENERALLY VERTICAL PLANES AND FACING IN DIFFERENT GENERALLY FRONTAL DIRECTIONS TO PROVIDE DISTRIBUTION OF REPRODUCED STEREOPHONIC SOUND THEREFROM IN LATERAL DIRECTIONS AND IN DEPTH OVER AN EXTENDED AREA FRONTALLY OF SAID ENCLOSURE MEANS FROM EFFECTIVELY A COMMON CENTRALIZED LOCATION, AND INPUT CIRCUIT MEANS CONNECTING SAID RELATED PAIRS OF SPEAKER UNITS FOR RESPONSE TO TWO STEREOPHONICALLY-RELATED SOUND SIGNALS.
Claim 2
Dependent Claim
139 words
A UNITARY STEREOPHONIC LOUDSPEAKER SYSTEM FOR THE REPRODUCTION OF SOUND IN AUDITORY PRESPECTIVE, COMPRISING IN COMBINATION, UNITARY SPEAKER ENCLOSURE MEANS HAVING A FRONTAL AND TWO SPACED SIDE AREAS, A PLURALITY OF SPEAKER UNITS MOUNTED IN AND BAFFLED BY SAID ENCLOSURE MEANS IN STEREOPHONICALLY-RELATED PAIRS, ONE SPEAKER UNIT OF EACH PAIR BEING POSITIONED IN ONE OF SAID SIDE AREAS AND THE OTHER SPEAKER UNIT OF EACH PAIR BEING POSITIONED IN THE OTHER OF SAID SIDE AREAS, SAID SPEAKER PAIRS BEING MOUNTED IN DIFFERENT GENERALLY VERTICAL PLANES AND FACING IN DIFFERENT GENERALLY FRONTAL DIRECTIONS TO PROVIDE DISTRIBUTION OF REPRODUCED STEREOPHONIC SOUND THEREFROM IN LATERAL DIRECTIONS AND IN DEPTH OVER AN EXTENDED AREA FRONTALLY OF SAID ENCLOSURE MEANS FROM EFFECTIVELY A COMMON CENTRALIZED LOCATION, AND INPUT CIRCUIT MEANS CONNECTING SAID RELATED PAIRS OF SPEAKER UNITS FOR RESPONSE TO TWO STEREOPHONICALLY-RELATED SOUND SIGNALS.
References Cited (Backward Citations)
US1915954A
Cited
US2137032A
Cited
US2143175A
Cited
GB781637A
Cited
US2808121A
Cited
FR1199441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |