HYDRO NAIL
Filed: July 5, 1961
Metal Nailing Plates
Owned by: Hydro-Air Engineering, Inc.
Serial Number: 72123424
MONO-PRESS
Filed: June 4, 1962
Fabricating Apparatus for Wooden Trusses
Owned by: Hydro-Air Engineering, Inc.
Serial Number: 72146054
ROC AWAY
Filed: June 4, 1962
TRUSS FABRICATING APPARATUS AND FLUID CLAMPS AND PRESSES THEREFOR
Owned by: Hydro-Air Engineering, Inc.
Serial Number: 72146055
BEAVER
Filed: April 12, 1965
APPARATUS FOR FABRICATING WOODEN TRUSSES
Owned by: Hydro-Air Engineering, Inc.
Serial Number: 72216305
GLIDE AWAY
Filed: November 27, 1970
TRUSS FABRICATING APPARATUS AND FLUID CLAMPS AND PRESSES THEREFOR
Owned by: Hydro-Air Engineering, Inc.
Serial Number: 72377296
TIGER CAT
Filed: November 27, 1974
APPARATUS FOR FABRICATING FLOOR TRUSSES
Owned by: Hydro-Air Engineering, Inc.
Serial Number: 73038268
POSI-TOOTH
Filed: February 10, 1975
METAL NAILING PLATES
Owned by: Hydro-Air Engineering, Inc.
Serial Number: 73043881
DIRK
Filed: September 17, 1975
METAL NAILING PLATES
Owned by: Hydro-Air Engineering, Inc.
Serial Number: 73063316
NAILRITE
Filed: November 24, 1976
METAL NAILING PLATES AND WOODEN TRUSSES
Owned by: Hydro-Air Engineering, Inc.
Serial Number: 73107587
CAL CUT
Filed: November 29, 1978
CALCULATORS AND PROGRAMMING CARDS FOR USE IN CALCULATING DATA FOR FABRICATING AND COSTING WOOD TRUSSES
Owned by: Hydro-Air Engineering, Inc.
Serial Number: 73195008
SAV-A-TIE
Filed: September 28, 1981
Machines for Pressing Nailing Plates into Railroad Tie Ends
Owned by: Hydro-Air Engineering, Inc.
Serial Number: 73330009
