US3679023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loudspeaker enclosure
Assignee: Individual
•
Filing: 1968-08-06
•
Granted: 1972-07-25
•
Expires: 1988-08-06
Abstract
Abstract A closed back loudspeaker enclosure with the grille cloth replaced by wooden slats. The space between the slats is arranged to prevent air compression and allow free passage of sound from the loudspeaker. The loudspeaker is mounted on a front panel and both the loudspeaker and front panel are concealed by the slats.
Inventors
- 👤 John C Rankin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:53
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/02; H04R1/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A loudspeaker enclosure closed on all sides having the loudspeaker mounted on a panel and concealed by two layers of non compressing, spaced wooden slats, with the spaces between the slats of one layer covered by other slats, each slat being spaced from its adjacent slat with all slats spaced from the panel and all slats having the longest dimensions parallel to the front surface of the enclosure.
Claim 2
Dependent Claim
68 words
A loudspeaker enclosure closed on all sides having the loudspeaker mounted on a panel and concealed by two layers of non compressing, spaced wooden slats, with the spaces between the slats of one layer covered by other slats, each slat being spaced from its adjacent slat with all slats spaced from the panel and all slats having the longest dimensions parallel to the front surface of the enclosure.
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |