US3036158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binaural volume tuner
Assignee: Webcor Inc
•
Filing: 1957-09-25
•
Granted: 1962-05-22
•
Expires: 1977-09-25
Abstract
No abstract record available.
Inventors
- 👤 Sam S Romano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:47
CPC Classifications
H; H04; H04S; H04S1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2481576A
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US2474191A
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US2778874A
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US2822429A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |