US3015216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning system
Assignee: Individual
•
Filing: 1957-03-25
•
Granted: 1962-01-02
•
Expires: 1977-03-25
Abstract
No abstract record available.
Inventors
- 👤 Robert C Coblentz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:43
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/30; F24F11/41; F24F11/43; F24F11/62; F24F11/70; F24F11/72; F24F11/74; F24F11/77
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2060316A
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US2160381A
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US2198449A
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US2223287A
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US2299335A
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US2332730A
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US2293482A
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US2292335A
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US2628480A
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US2956416A
Cited
US2870964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |