Patent US2494343A successfully refreshed from Google Patents.
US2494343A
Expired / Lapsed
US
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Sound absorption
Assignee: General Electric Co
•
Filing: 1945-04-18
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Granted: 1950-01-10
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Expires: 1965-04-18
Abstract
No abstract record available.
Inventors
- 👤 Mannal Clifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:52
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR404148A
Cited
US1127250A
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US1580811A
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US1589408A
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US1641374A
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US1838645A
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US1912544A
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US1846887A
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US1968456A
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US1957245A
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US2394461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |