CA390688A - Heater draft controlling apparatus - Google Patents

Heater draft controlling apparatus

Info

Publication number
CA390688A
CA390688A CA390688A CA390688DA CA390688A CA 390688 A CA390688 A CA 390688A CA 390688 A CA390688 A CA 390688A CA 390688D A CA390688D A CA 390688DA CA 390688 A CA390688 A CA 390688A
Authority
CA
Canada
Prior art keywords
controlling apparatus
draft controlling
heater draft
heater
draft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA390688A
Other languages
French (fr)
Inventor
R. Hagen Hilmar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PHILADELPHIA AND READING COAL AND IRON Co
Original Assignee
PHILADELPHIA AND READING COAL AND IRON Co
Publication date
Application granted granted Critical
Publication of CA390688A publication Critical patent/CA390688A/en
Expired legal-status Critical Current

Links

CA390688A Heater draft controlling apparatus Expired CA390688A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA390688T

Publications (1)

Publication Number Publication Date
CA390688A true CA390688A (en) 1940-08-13

Family

ID=35398259

Family Applications (1)

Application Number Title Priority Date Filing Date
CA390688A Expired CA390688A (en) Heater draft controlling apparatus

Country Status (1)

Country Link
CA (1) CA390688A (en)

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