US PATENT SUBCLASS 454 / 903
FLEXIBLE DUCTS USED FOR CARRYING AIR
Current as of:
June, 1999
Click
HD
for Main Headings
Click for
All Classes
Internet Version by
PATENTEC
© 1999
Terms of Use
454 /
HD
VENTILATION
903
FLEXIBLE DUCTS USED FOR CARRYING AIR
DEFINITION
Classification: 454/903
FLEXIBLE DUCTS USED FOR CARRYING AIR:
(under the class definition) Subject matter comprising a conduit for guiding air to or from a ventilated space which is constructed to undergo bending, twisting, or turning without breakage.
