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US3037577A
Expired / Lapsed
US
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Acoustical enclosures
Assignee: Zenith Electronics LLC
•
Filing: 1959-05-01
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Granted: 1962-06-05
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Expires: 1979-05-01
Abstract
No abstract record available.
Inventors
- 👤 Herbert H Steglich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:24
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/02; H04R1/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2113623A
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US2247171A
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US2282384A
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US2552309A
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US2853145A
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US2829728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-04 | 1965-12-04 | 1966-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-04 | 1969-12-04 | 1970-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-04 | 1973-12-04 | 1974-06-05 | $7700.00 | Window Closed / Lapsed |