DE1450759U - - Google Patents

Info

Publication number

DE1450759U

DE1450759U DENDAT1450759D DE1450759DU DE1450759U DE 1450759 U DE1450759 U DE 1450759U DE NDAT1450759 D DENDAT1450759 D DE NDAT1450759D DE 1450759D U DE1450759D U DE 1450759DU DE 1450759 U DE1450759 U DE 1450759U

Authority

DE

Germany

Prior art keywords

hard rubber

cavity

piece

hole

valves

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.)

Active

Links

• Espacenet
• Global Dossier
• DPMA
• Discuss

• 229920001875 Ebonite Polymers 0.000 claims description 15
• 210000004072 lung Anatomy 0.000 claims description 3
• 238000009412 basement excavation Methods 0.000 description 2
• 238000005553 drilling Methods 0.000 description 1
• 239000002184 metal Substances 0.000 description 1
• 238000000034 method Methods 0.000 description 1
• 230000029058 respiratory gaseous exchange Effects 0.000 description 1