GB619640A - - Google Patents

Info

Publication number
GB619640A
GB619640A GB619640DA GB619640A GB 619640 A GB619640 A GB 619640A GB 619640D A GB619640D A GB 619640DA GB 619640 A GB619640 A GB 619640A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
diaphragms
brandenburg
stethoscopes
dec
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Publication date
Publication of GB619640A publication Critical patent/GB619640A/en
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B7/00—Instruments for auscultation
    • A61B7/02—Stethoscopes

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Abstract

619,640. Stethoscopes. BRANDENBURG, J. Dec. 18, 1946, No. 37211. [Class 81 (ii)] [Also in Group XXXIX] The head of a stethoscope contains two inwardly dished centrally - apertured diaphragms in addition to the outer diaphragm 21. The diaphragms are rim-clamped and the inner diaphragm 15 is radially slotted while the intermediate diaphragm 33 is provided with small perforations 37.
GB619640D Expired GB619640A (en)

Publications (1)

Publication Number Publication Date
GB619640A true GB619640A (en) 1900-01-01

Family

ID=1749621

Family Applications (1)

Application Number Title Priority Date Filing Date
GB619640D Expired GB619640A (en)

Country Status (1)

Country Link
GB (1) GB619640A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1049046B (en) * 1954-12-28 1959-01-22 Belge D Optique Et D Instr De Listening device for doctors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1049046B (en) * 1954-12-28 1959-01-22 Belge D Optique Et D Instr De Listening device for doctors

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