Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of NL82143CpublicationCriticalpatent/NL82143C/xx
F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
F24F7/00—Ventilation
F24F7/007—Ventilation with forced flow
A—HUMAN NECESSITIES
A44—HABERDASHERY; JEWELLERY
A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
A44B19/00—Slide fasteners
A44B19/24—Details
A44B19/26—Sliders
A44B19/28—Sliders constructed to be removable from at least one stringer ; Sliders with movable parts to permit releasing of the slider in the event of jamming or obstruction