Aerodyne
Aeropulse
Aget
Aims
Airtrol
Airtrol II
Amerex
American Air
Ametek
Aztec
Aztek
A.E.I.
Baldor
Barber Green
B.H.A.
Boothe
Buffalo Forge
Buhler
Butler
Carborundum
Carter Day
Chafco
Clar-Tex
Columbus Bin
Continental
CW Filter
C.E. Air-Ray Jet
C.M.I.
D.C.E. Volkes
Draco
Duster
Dustex
Dusty Dustless
Dyna-Quip
D.C.L.
Eastern Control
Ecolair
Envirotech
Estee
E.S. & R.
E.V.O.

Flex-Kleen
Flowtronics
Flo-tronics
Free Flow
Fuller
General Resource
Gerber
Gerheardt
Griffin
Guzzler
Halli Burton
Hoffman
Interel
Int'l/Ind. Fan
I.A.C.
I.A.C. I
I.A.C. II
I.F.P.
Johnson March
Keisslar
Kice
K.E.I.
Lamson
Littleford Bros.
Mac
Mac Donald
McCarter
Midwest Airstream
Mikro-Pul
Moldow
MSM
Murphy Rogers
Norblo
Norfelt
Northwest
North-Fab
Pangborn
PBF
Peabody
Pneumafil
Poluto
Premier

Raymond, C.E.
Reese
Reimelt
Remmele
Rogers, C.E.
Rolfes
Roncaglia
Ross
Ruemelin
Schick
Semco
Seneca
Sharpe
Simon
Smico
Spencer
Sta Clean
Standard Havens
Stansteel
Steelcraft
Sternvent
Stevens
Super Sucker
Sweco
Tech-Air
Torit
Ultra Vac
Ultrakleen
United Gulf
US Air
Vactor
Vac-U-Blast
Vac-U-Max
Valley Sys/Sus Prod.
Weideman
Wheelabrator
Whir Air Flow
Whitlock
Young
Zero