American Watch Tool Company
B.C.Ames
Bottum
Elgin
Cataract
Hardinge
Hjorth
Levin
W.H.Nichols
Frederick Pearce
Potter
Pratt & Whitney
Remington,
Rivett
Sloan & Chace
Wade
Waltham Machine Works
Wade,

Ballou & Whitcombe
Sawyer Watch Tool Co.
Engineering Appliances
Fenn-Sadler
"Cosa Corporation of New York"
UND.