Patent US3015704A successfully refreshed from Google Patents.
US3015704A
Expired / Lapsed
US
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Acoustical apparatus
Assignee: Maico Electronics Inc
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Filing: 1960-10-24
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Granted: 1962-01-02
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Expires: 1980-10-24
Abstract
No abstract record available.
Inventors
- 👤 Behymer Donald James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:24
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/32; H03F3/00; H03F3/181; H03F3/183; H03F3/26; H04; H04R; H04R25/00; H04R25/04; H03F2200/00; H03F2200/03; H03F2200/405; H03F2200/534; H04R25/50; H04R25/502
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |