CA207743A - Mecanisme de sifflet - Google Patents

Mecanisme de sifflet

Info

Publication number
CA207743A
CA207743A CA207743A CA207743DA CA207743A CA 207743 A CA207743 A CA 207743A CA 207743 A CA207743 A CA 207743A CA 207743D A CA207743D A CA 207743DA CA 207743 A CA207743 A CA 207743A
Authority
CA
Canada
Prior art keywords
operating device
whistle
whistle operating
operating
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
CA207743A
Other languages
English (en)
Inventor
Justin Rowland Frank
Thomas Mayo, Jr.
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA207743A publication Critical patent/CA207743A/fr
Expired legal-status Critical Current

Links

CA207743A Mecanisme de sifflet Expired CA207743A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA207743T

Publications (1)

Publication Number Publication Date
CA207743A true CA207743A (fr) 1921-01-18

Family

ID=35101522

Family Applications (1)

Application Number Title Priority Date Filing Date
CA207743A Expired CA207743A (fr) Mecanisme de sifflet

Country Status (1)

Country Link
CA (1) CA207743A (fr)

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