CH3309A - Adjustable ventilation device for headgear - Google Patents

Adjustable ventilation device for headgear

Info

Publication number
CH3309A
CH3309A CH3309A CH3309DA CH3309A CH 3309 A CH3309 A CH 3309A CH 3309 A CH3309 A CH 3309A CH 3309D A CH3309D A CH 3309DA CH 3309 A CH3309 A CH 3309A
Authority
CH
Switzerland
Prior art keywords
headgear
ventilation device
adjustable ventilation
adjustable
ventilation
Prior art date
Application number
CH3309A
Other languages
German (de)
Inventor
Conrad Heer
Original Assignee
Conrad Heer
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.)
Filing date
Publication date
Application filed by Conrad Heer filed Critical Conrad Heer
Publication of CH3309A publication Critical patent/CH3309A/en

Links

CH3309A 1891-03-25 1891-03-25 Adjustable ventilation device for headgear CH3309A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH3309T 1891-03-25

Publications (1)

Publication Number Publication Date
CH3309A true CH3309A (en) 1891-10-31

Family

ID=4184562

Family Applications (1)

Application Number Title Priority Date Filing Date
CH3309A CH3309A (en) 1891-03-25 1891-03-25 Adjustable ventilation device for headgear

Country Status (1)

Country Link
CH (1) CH3309A (en)

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