US3108654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integral loud speaker baffle
Assignee: Lowell Manufacturing Co
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Filing: 1961-11-06
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Granted: 1963-10-29
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Expires: 1981-11-06
Abstract
No abstract record available.
Inventors
- 👤 Hammes Josef Johann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:06
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/32; H04R1/34; H04R1/345
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
AN INTEGRAL ORGANIC PLASTIC LOUD SPEAKER BAFFLE COMPRISING A FLAT BASE, A PLURALITY OF CONCENTRIC FRUSTO-CONICAL RINGS RADIALLY SPACED FROM ONE ANOTHER IN THEIR ENTIRETY SUPPORTED BY SAID BASE, SAID RINGS BEING CONNECTED TO ONE ANOTHER BY A PLURALITY OF RIBS SPACED FROM ONE ANOTHER ABOUT THE PERIPHERY OF SAID RINGS TO PROVIDE SOUND WAVE PASSAGES BETWEEN SAID RIBS, SAID RIBS CONNECTING ADJACENT RINGS THROUGH A CONNECTION AT THE FRONT EDGE OF AN INNERMOST OF SAID ADJACENT RINGS AND A CONNECTION AT THE
Claim 2
Dependent Claim
83 words
AN INTEGRAL ORGANIC PLASTIC LOUD SPEAKER BAFFLE COMPRISING A FLAT BASE, A PLURALITY OF CONCENTRIC FRUSTO-CONICAL RINGS RADIALLY SPACED FROM ONE ANOTHER IN THEIR ENTIRETY SUPPORTED BY SAID BASE, SAID RINGS BEING CONNECTED TO ONE ANOTHER BY A PLURALITY OF RIBS SPACED FROM ONE ANOTHER ABOUT THE PERIPHERY OF SAID RINGS TO PROVIDE SOUND WAVE PASSAGES BETWEEN SAID RIBS, SAID RIBS CONNECTING ADJACENT RINGS THROUGH A CONNECTION AT THE FRONT EDGE OF AN INNERMOST OF SAID ADJACENT RINGS AND A CONNECTION AT THE
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) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |