US2590731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for reducing noises in refrigeration systems
Assignee: Carrier Corp
•
Filing: 1947-08-14
•
Granted: 1952-03-25
•
Expires: 1967-08-14
Abstract
No abstract record available.
Inventors
- 👤 Sam F Shawhan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:25
CPC Classifications
F; F25; F25B; F25B41/00; F25B41/30; F25B41/37; F25B2400/00; F25B2400/05; F25B2400/052; F25B2500/00; F25B2500/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1838040A
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US1873519A
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US2096075A
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US2237007A
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US2413336A
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US2404112A
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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) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |