US3015366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speaker system
Assignee: Individual
•
Filing: 1956-12-14
•
Granted: 1962-01-02
•
Expires: 1976-12-14
Abstract
No abstract record available.
Inventors
- 👤 George M Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:06
CPC Classifications
H; H04; H04R; H04R9/00; H04R9/06; H04R9/063; H04R1/00; H04R1/20; H04R1/32; H04R1/34; H04R1/345
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1731570A
Cited
US1551105A
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US1722008A
Cited
US1868019A
Cited
US1895494A
Cited
US1748632A
Cited
US1743194A
Cited
US2340604A
Cited
US2375004A
Cited
US2548235A
Cited
US2613568A
Cited
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 |