US2731606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structure for reduction of audible sound
Assignee: General Electric Co
•
Filing: 1951-07-26
•
Granted: 1956-01-17
•
Expires: 1971-07-26
Abstract
No abstract record available.
Inventors
- 👤 Harold C Stewart
- 👤 James E Holcomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:38
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2587529A
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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) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |