US3384719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereophonic speaker arrangement
Assignee: General Electric Co
•
Filing: 1964-10-21
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Granted: 1968-05-21
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Expires: 1984-10-21
Abstract
No abstract record available.
Inventors
- 👤 Edward M Lanzara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:45
CPC Classifications
H; H04; H04R; H04R5/00; H04R5/02; H04R5/023; A; A47; A47C; A47C7/00; A47C7/62; A47C7/72; A47C7/727; Y; Y10; Y10S; Y10S5/00; Y10S5/904
Claims Analysis
Total Claims: 0
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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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |