US3570264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporant cooling system
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1969-03-13
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Granted: 1971-03-16
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Expires: 1989-03-13
Abstract
Abstract AN EVAPORANT COOLING SYSTEM FOR A LIGHT WEIGHT GARMENT HAVING A PLURALITY OF TUBES CONNECTED IN PARALLEL BETWEEN AN INLET MANIFOLD AND AN EXZHAUST MANIFOLD, THE TUBES BEING SELECTIVELY POSITIONED ON THE BODY OF THE WEARER, THE INLET MANIFOLD BEING NEAR A LOW POINT OF THE WEARER FOR BEING SUPPLIED WITH A LIQUID AMMONIA-WATER EVAPORANT, AND THE EXHAUST MANIFOLD BEING NEAR A HIGH POINT OF THE WEARER AND BEING PROVIDED WITH AN EXHAUST TUBE FOR DISCHARGING THE EXPENDED EVAPORANT.
Inventors
- 👤 Daniel L Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:16
CPC Classifications
A; A62; A62C; A62C99/00; A62C99/009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |