Window unit

Details Window unit Window unit

1980-04-30

1981-10-20

Makay, Albert J.

49 63, 98 90, E06B 702

Patent

active

042954177

ABSTRACT:
A thermal window with insulating and noise reduction properties is provided with double glazing that has a large dead air space between the glazing. The top and bottom of the dead air space is divided into compartments which are shuttered by sliding glass panels that may be selectively positioned to allow a variety of air exchange conditions within the window unit.

REFERENCES:
patent: 355904 (1887-01-01), Abrahamson
patent: 1136784 (1915-04-01), Fair
patent: 1360698 (1920-11-01), Vorbroker
patent: 3077011 (1963-02-01), Boucher

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