US3135348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speaker enclosure
Assignee: Individual
•
Filing: 1961-03-20
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Granted: 1964-06-02
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Expires: 1981-03-20
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Bill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:52
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/26; H04R1/28; H04R1/2869; H04R1/2884; H04R1/2888
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A SPEAKER ENCLOSURE DEVICE COMPRISING A HOLLOW HOUSING HAVING A SOUND REFLECTING INNER WALL SURFACE; SAID SURFACE BEING OF SUBSTANTIALLY UNIFORM SECTIONAL CONTOUR THROUGHOUT ONE DIMENSION; A SUBSTANTIAL PORTION OF SAID INNER WALL SURFACE BEING CONCAVELY ROUNDED; MEANS DEFINING IN OPENING IN SAID HOUSING; SPEAKER MEANS MOUNTED IN SAID OPENING IN SUCH MANNER AS TO NORMALLY DIRECT SOUND THEREFROM OUTWARDLY AWAY FROM SAID HOUSING; SAID OPENING BEING LARGER THAN SAID SPEAKER MEANS.
Claim 2
Dependent Claim
72 words
A SPEAKER ENCLOSURE DEVICE COMPRISING A HOLLOW HOUSING HAVING A SOUND REFLECTING INNER WALL SURFACE; SAID SURFACE BEING OF SUBSTANTIALLY UNIFORM SECTIONAL CONTOUR THROUGHOUT ONE DIMENSION; A SUBSTANTIAL PORTION OF SAID INNER WALL SURFACE BEING CONCAVELY ROUNDED; MEANS DEFINING IN OPENING IN SAID HOUSING; SPEAKER MEANS MOUNTED IN SAID OPENING IN SUCH MANNER AS TO NORMALLY DIRECT SOUND THEREFROM OUTWARDLY AWAY FROM SAID HOUSING; SAID OPENING BEING LARGER THAN SAID SPEAKER MEANS.
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) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |