Patent US2966109A successfully refreshed from Google Patents.
US2966109A
Expired / Lapsed
US
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Dual supply air conditioning system having valve means for equalizing the supply flow
Assignee: RTX Corp
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Filing: 1957-04-29
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Granted: 1960-12-27
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Expires: 1977-04-29
Abstract
No abstract record available.
Inventors
- 👤 Stanley G Best
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:01
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/06; B64D2013/0603; B64D2013/064
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23913E
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US2456215A
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US2425000A
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US2496862A
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US2698568A
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US2723615A
Cited
US2854913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |