Ventilation tube permitting two-way gaseous communication with one-way liquid valve
A Standard patent application filed on 18 June 1985 credited to Prescott, Anthony D.
;
Treharne III, Richard W.
Details
Application number :
43771
Application type :
Standard
Application status :
CEASED
Under opposition :
No
Proceeding type :
Invention title :
Ventilation tube permitting two-way gaseous communication with one-way liquid valve