Search Results for: Foot operated air pumps
(class / ) with flow control means (e.g., check valves, hydrocephalus pumps, etc.)
(class / ) means for indicating condition of container content (class / ) filter for purifying or washing air entering container (class / ) filter or series thereof for liquid entering or leaving container (class / ) means for metering amount of content drawn from container (class / ) bag type (class...
https://patents.justia.com/patents-by-us-classification/604