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All Makers H-L

Example Artifact	Rule, parallel
Haliburton & White Ltd.	Headset Capacitor
Hallicrafters Canada Ltd.	Receiver, radio Transceiver, radio Receiver, radio Antenna
The Hammond Company of Canada Ltd.	Clock Transformer
Hammond Manufacturing Co.	Transformer & choke Organ Filter, choke input Transformer
Harrison & Co. Scientific Instruments
Hearn & Potter
Hearn & Harrison	Pantograph Circumferentor Transit Transit
Helion Electric Co.
Henry Sanders
W.H. Hepworth
Cossor (Canada) Ltd.	Control unit
Héroux Inc.
Hilger & Watts Ltd.
His Master's Voice
Honeywell (Canada)	Thermostat Filter, air Thermostat Converter, differential
Honeywell Controls Ltd.	Converter, differential Thermostat
Hoskin Scientific Ltd.
The Hughes-Owens Co. Ltd.	Sextant, pocket Sextant, pocket Scale, engineer's Pointer, station
Humble Manufacturing Co. Ltd.
William Hutchinson
H.W. Petrie
Hymarc Ltd.
Industries d'Acier Inoxydable Ltée
IBM Canada	Drive, disk Memory, core Punch-reader, card Central processing unit
I.D.I. Electrical (Canada) Ltd.
Imperial Optical Co.
Industrial Combustion & Equipment Ltd.
Industrial Instrument Co.
Industrial Projects Ltd.
Industrial Scientific Instruments
Industries d'Acier Inoxydable Ltée
Ingraham Canadian Clock Co. Ltd.
Ingram & Bell Ltd.
Instronics Ltd.	Cursor Keyboard, computer Scanner Table
Instruments Ltd.	Drawing set Pen Instrument part Point, needle
International Instrument Sales
Interoptics Ltd.
Interprovincial Corrosion Control Co. Ltd.
Intricate Devices
International Resistance Co. Ltd.
ITM Instruments
ITT Canada Ltd.	Rack
J. Frank Raw	Alidade Triangle Alidade
	Medical kit
The J.W. Ellis Industries
Jacob Calnek
	Micrometer
James R. Kearney Corp. of Canada Ltd.
James Morrison Brass Mfg, Co. Ltd.	Gauge Gauge, pressure Gauge Gauge
James Orkney
James Shaw
Jarrell-Ash
Canadian Jefferson Electric Co. Ltd.	Transformer Switch Fuse
Jena Scientific Instruments Ltd.
J.G. Joseph
John Herring & Co. Ltd.
John McWatters
John Wood Survey Equipment Ltd.
O.H. Johns Glass Co.
Canadian W.H. Johns-Manville Company Ltd.
Joseph Post
J.O.W. Lence Ltd.
Joy Manufacturing Company (Canada) Ltd. Joy Manufacturing Company (Canada) Limited	Drill, pneumatic Drill leg Drill, pneumatic
J.S. Surgical Supplies
Jules R. Gilbert Ltd.
F.H. Kallenbach
Kay Electric Works	Motor
Kelvin-Hughes
Kurt E. Kemsies
George Kent (Canada) Ltd.
Keuffel & Esser
SCI-TEC Instruments Ltd.
Canadian Kodak Co. Ltd.	Camera Plate, dry Safelight Pack, film
Lakewood Systems Ltd.
Landis & Gyr Inc.
Lava Computer Mfg. Ltd.
Leander Sales Co. Ltd.
Leeds & Northup, Canada Ltd.	Recorder, radiosonde
Leigh Instruments Ltd.
Lewis Instruments Ltd.
LightMachinery Inc.
Lincoln Meter Co. Ltd.	Converter, thermal Meter, demand Meter, demand
Union Carbide Canada Ltd., Linde Gases Division
Liquidometer of Canada Ltd.
Lisle Instrument Systems
Lufkin Rule Co. of Canada	Measure, tape Rule Tape, chain Tape
Lumonics Ltd.