US3584390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair dryer
Assignee: Westinghouse Electric Corp
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Filing: 1968-08-01
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Granted: 1971-06-15
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Expires: 1988-08-01
Abstract
Abstract A PORTABLE, SOFT-BONNET HAIR DRYING PROVIDED WITH A COMBINATION BOILER AND HEATER WHICH SERVES TO SIMULTANEOUSLY CONVERT WATER TO STEAM AND TO HEAT FORCED AIR WHICH IS SUBSEQUENTLY UNITED WITH THE STEAM FOR DELIVERY TO THE BONNET. THE HAIR DRYER CONSTITUTES A SELF-CONTAINED UNIT, IN THAT, THE BOILER UNIT, UNLIKE PRIOR ART CONSTRUCTIONS, IS DISPOSED IN THE SAME HOUSING WITH THE FAN AND HEATER.
Inventors
- 👤 Harry H Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:35
CPC Classifications
A; A45; A45D; A45D20/00; A45D20/18
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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |