Patent US3183305A successfully refreshed from Google Patents.
US3183305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable sound system
Assignee: AMPEG CO Inc
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Filing: 1962-07-27
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Granted: 1965-05-11
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Expires: 1982-07-27
Abstract
No abstract record available.
Inventors
- 👤 Jespersen Oliver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:16
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/02; H04R1/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
IN A PORTABLE SOUND SYSTEM, THE COMBINATION OF A LOUDSPEAKER ENCLOSURE HAVING AN OPENING THEREIN, A DETACHABLE AND REVERSIBLE CLOSURE REMOVABLE FROM AND REPLACEABLE IN INVERTED RELATIONSHIP IN SAID OPENING, AMPLIFIER MEANS SECURED TO AND ON ONE SIDE OF SAID CLOSURE, AND MEANS RETAINING SAID CLOSURE RELEASABLY IN CLOSING RELATION TO SAID OPENING.
Claim 2
Dependent Claim
53 words
IN A PORTABLE SOUND SYSTEM, THE COMBINATION OF A LOUDSPEAKER ENCLOSURE HAVING AN OPENING THEREIN, A DETACHABLE AND REVERSIBLE CLOSURE REMOVABLE FROM AND REPLACEABLE IN INVERTED RELATIONSHIP IN SAID OPENING, AMPLIFIER MEANS SECURED TO AND ON ONE SIDE OF SAID CLOSURE, AND MEANS RETAINING SAID CLOSURE RELEASABLY IN CLOSING RELATION TO SAID OPENING.
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) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |