US3239028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound reproduction system
Assignee: Individual
•
Filing: 1963-11-01
•
Granted: 1966-03-08
•
Expires: 1983-11-01
Abstract
No abstract record available.
Inventors
- 👤 Willard A Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:07
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/28; H04R1/2807; H04R1/283; H04R1/2834; H04R1/2838; H04R1/2842
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
SOUND-REPRODUCING APPARATUS COMPRISING CABINET MEANS WHICH DEFINES AN ENCLOSED CAVITY, SAID CABINET MEANS HAVING FRONT AND REAR WALL PORTIONS, SAID FRONT WALL PORTION BEING PROVIDED WITH A SPEAKER OPENING AND AT LEAST ONE APERTURE, A DIAPHRAGM SPEAKER MOUNTED WITHIN SAID CAVITY ON SAID FRONT WALL PORTION WITH THE DIAPHRAGM OVER SAID SPEAKER OPENING, AND PANEL MEANS SPACED FROM AND MOUNTED ON SAID FRONT WALL PORTION ON THE SIDE OPPOSITE SAID SPEAKER AND DEFINING A CHAMBER THEREWITH HAVING A PERIPHERAL EDGE PORTION WHICH IS OPEN, SAID PANEL MEANS OVER LYING SAID OPENING AND APERTURE, SAID CABINET MEANS BEING OF A VIBRATION TRANSFERRING MATERIAL; SAID CAVITY, SAID CHAMBER, SAID OPENING AND SAID APERTURE BEING OF SUCH SIZES AS WILL VIBRATIONALLY COUPLE SAID DIAPHRAGM TO SAID CABINET MEANS TO PRODUCE OMNIDIRECTIONAL RADIATION OF SOUND BY SAID DIAPHRAGM, SAID CABINET MEANS AND SAID PANEL MEANS AS A COMMON SOUND SOURCE; SAID SIZES
Claim 2
Dependent Claim
148 words
SOUND-REPRODUCING APPARATUS COMPRISING CABINET MEANS WHICH DEFINES AN ENCLOSED CAVITY, SAID CABINET MEANS HAVING FRONT AND REAR WALL PORTIONS, SAID FRONT WALL PORTION BEING PROVIDED WITH A SPEAKER OPENING AND AT LEAST ONE APERTURE, A DIAPHRAGM SPEAKER MOUNTED WITHIN SAID CAVITY ON SAID FRONT WALL PORTION WITH THE DIAPHRAGM OVER SAID SPEAKER OPENING, AND PANEL MEANS SPACED FROM AND MOUNTED ON SAID FRONT WALL PORTION ON THE SIDE OPPOSITE SAID SPEAKER AND DEFINING A CHAMBER THEREWITH HAVING A PERIPHERAL EDGE PORTION WHICH IS OPEN, SAID PANEL MEANS OVER LYING SAID OPENING AND APERTURE, SAID CABINET MEANS BEING OF A VIBRATION TRANSFERRING MATERIAL; SAID CAVITY, SAID CHAMBER, SAID OPENING AND SAID APERTURE BEING OF SUCH SIZES AS WILL VIBRATIONALLY COUPLE SAID DIAPHRAGM TO SAID CABINET MEANS TO PRODUCE OMNIDIRECTIONAL RADIATION OF SOUND BY SAID DIAPHRAGM, SAID CABINET MEANS AND SAID PANEL MEANS AS A COMMON SOUND SOURCE; SAID SIZES
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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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |