US3268030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic system
Assignee: Individual
•
Filing: 1965-04-13
•
Granted: 1966-08-23
•
Expires: 1985-04-13
Abstract
No abstract record available.
Inventors
- 👤 Finn H Magnus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:45
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/32; H04R1/34; H04R1/345; H04R1/347; H04R5/00; H04R5/02; H04R1/22; H04R1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN AN AUDIO SYSTEM OF THE CLASS DESCRIBED, AN ENCLOSURE PARTITIONED INTO A CENTRAL BLENDING CHAMBER AND OPEN ENDED RESONANCE CHAMBERS, FIRST AND SECOND SOUND PROPAGATING SYSTEMS EACH COMPRISING A PLURALITY OF SPEAKERS, ONE SPEAKER OF EACH SYSTEM BEING MOUNTED IN THE PARTITIONS TO DIRECT ITS FORWARDLY PROPAGATED ACOUSTIC ENERGY INTO ONE RESPECTIVE RESONANCE CHAMBER AND THENCE TO A LISTENING AREA AND ITS REARWARDLY DIRECTED ENERGY INTO SAID BLENDING CHAMBER, THE REMAINING SPEAKERS OF EACH SYSTEM MOUNTED TO DIRECT THEIR FORWARDLY PROPAGATED ENERGY DIRECTLY INTO THE LISTENING AREA AND THEIR REARWARDLY DIRECTED ENERGY INTO SAID BLENDING CHAMBER, AND MEANS DEFINING AN ACCESS OPENING PERMITTING THE ENERGY IN SAID BLENDING CHAMBER TO PASS TO THE LISTENING AREA.
Claim 2
Dependent Claim
116 words
IN AN AUDIO SYSTEM OF THE CLASS DESCRIBED, AN ENCLOSURE PARTITIONED INTO A CENTRAL BLENDING CHAMBER AND OPEN ENDED RESONANCE CHAMBERS, FIRST AND SECOND SOUND PROPAGATING SYSTEMS EACH COMPRISING A PLURALITY OF SPEAKERS, ONE SPEAKER OF EACH SYSTEM BEING MOUNTED IN THE PARTITIONS TO DIRECT ITS FORWARDLY PROPAGATED ACOUSTIC ENERGY INTO ONE RESPECTIVE RESONANCE CHAMBER AND THENCE TO A LISTENING AREA AND ITS REARWARDLY DIRECTED ENERGY INTO SAID BLENDING CHAMBER, THE REMAINING SPEAKERS OF EACH SYSTEM MOUNTED TO DIRECT THEIR FORWARDLY PROPAGATED ENERGY DIRECTLY INTO THE LISTENING AREA AND THEIR REARWARDLY DIRECTED ENERGY INTO SAID BLENDING CHAMBER, AND MEANS DEFINING AN ACCESS OPENING PERMITTING THE ENERGY IN SAID BLENDING CHAMBER TO PASS TO THE LISTENING AREA.
References Cited (Backward Citations)
DE1075666B
Cited
US2145318A
Cited
US2174128A
Cited
GB932738A
Cited
US3026957A
Cited
US3113633A
Cited
US3074503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |