Tiltable heater

Details Tiltable heater Tiltable heater

1992-05-26

1993-10-26

Burke, Wallace R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Portable

D23332

Patent

active

D03407659

REFERENCES:
patent: D144637 (1946-05-01), Smith
patent: D149266 (1948-04-01), Gustafson
patent: D157834 (1950-03-01), Bourner
patent: D161145 (1950-12-01), Wilson
patent: D161146 (1950-12-01), Wilson
patent: D161147 (1950-12-01), Wilson
patent: D265122 (1982-06-01), Townsend et al.
patent: D286428 (1986-10-01), Liu
patent: D301277 (1989-05-01), Fu
patent: D306342 (1990-02-01), Lane
patent: D306757 (1990-03-01), Lane
patent: D311951 (1990-11-01), Dubin
patent: D314613 (1991-02-01), De'Longhi
patent: D320648 (1991-10-01), Velazquez
patent: D325628 (1992-04-01), Cho
patent: 2443983 (1948-06-01), Gustafson et al.
patent: 2450921 (1948-10-01), Smith
patent: 2813673 (1957-11-01), Smith
patent: 3059090 (1962-10-01), Waters
patent: 4384189 (1983-05-01), Dahan
patent: 4703152 (1987-10-01), Shih-Chin
patent: 4760243 (1988-07-01), Tedioli
patent: 4850804 (1989-07-01), Huang
patent: 4870253 (1989-09-01), De'Longhi
House & Garden, Nov. 1947, p. 220, Wittie Oscillating Heater Fan.
Brochure for a De'Longhi Turbo Tech Heat Accelerator (date unknown), published prior to May 26, 1992.

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