CH81848A - Protective mask against the transmission of infectious diseases - Google Patents

Protective mask against the transmission of infectious diseases

Info

Publication number
CH81848A
CH81848A CH81848A CH81848DA CH81848A CH 81848 A CH81848 A CH 81848A CH 81848 A CH81848 A CH 81848A CH 81848D A CH81848D A CH 81848DA CH 81848 A CH81848 A CH 81848A
Authority
CH
Switzerland
Prior art keywords
transmission
infectious diseases
protective mask
mask against
protective
Prior art date
Application number
CH81848A
Other languages
German (de)
Inventor
Louis Osterwald
Original Assignee
Louis Osterwald
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 Louis Osterwald filed Critical Louis Osterwald
Publication of CH81848A publication Critical patent/CH81848A/en

Links

CH81848A 1918-10-30 1918-10-30 Protective mask against the transmission of infectious diseases CH81848A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH81848T 1918-10-30

Publications (1)

Publication Number Publication Date
CH81848A true CH81848A (en) 1919-12-16

Family

ID=4336454

Family Applications (1)

Application Number Title Priority Date Filing Date
CH81848A CH81848A (en) 1918-10-30 1918-10-30 Protective mask against the transmission of infectious diseases

Country Status (1)

Country Link
CH (1) CH81848A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498668A (en) * 1947-09-02 1950-02-28 Fitzsimmons Leslie James Mask

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498668A (en) * 1947-09-02 1950-02-28 Fitzsimmons Leslie James Mask

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