US2830797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant condenser
Assignee: Frick Co Inc
•
Filing: 1953-05-05
•
Granted: 1958-04-15
•
Expires: 1973-05-05
Abstract
No abstract record available.
Inventors
- 👤 Milton W Garland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:22
CPC Classifications
F; F25; F25B; F25B39/00; F25B39/04; F25B2339/00; F25B2339/04; F25B2339/047; Y; Y10; Y10S; Y10S165/00; Y10S165/184; Y10S165/204
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1808619A
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US1812591A
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US2277647A
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US2354071A
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US2384413A
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US2400620A
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US2485844A
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GB630884A
Cited
US2716024A
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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) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |