Inventor
SCHWANDT DOUGLAS FRANK
US4 patents
⚠️ This page may combine multiple inventors who share the name “SCHWANDT DOUGLAS FRANK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ALTERG INC
3 patentsUS10004656B2Jun 26, 2018
Systems, methods and apparatus for differential air pressure devices
ALTERG INC35 citations91
US12239595B2Mar 4, 2025
Differential air pressure systems
ALTERG INC0 citations60
US12171715B2Dec 24, 2024
Systems, methods and apparatus for differential air pressure devices
ALTERG INC1 citations59