CA298657A - Dispositif de foyer de signal lumineux - Google Patents

Dispositif de foyer de signal lumineux

Info

Publication number
CA298657A
CA298657A CA298657A CA298657DA CA298657A CA 298657 A CA298657 A CA 298657A CA 298657 A CA298657 A CA 298657A CA 298657D A CA298657D A CA 298657DA CA 298657 A CA298657 A CA 298657A
Authority
CA
Canada
Prior art keywords
light signals
focusing device
focusing
signals
light
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
CA298657A
Other languages
English (en)
Inventor
T. Carter Ainslie
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.)
SPX Technologies Inc
Original Assignee
General Railway Signal Co
Publication date
Application granted granted Critical
Publication of CA298657A publication Critical patent/CA298657A/fr
Expired legal-status Critical Current

Links

CA298657A Dispositif de foyer de signal lumineux Expired CA298657A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA298657T

Publications (1)

Publication Number Publication Date
CA298657A true CA298657A (fr) 1930-03-25

Family

ID=35235976

Family Applications (1)

Application Number Title Priority Date Filing Date
CA298657A Expired CA298657A (fr) Dispositif de foyer de signal lumineux

Country Status (1)

Country Link
CA (1) CA298657A (fr)

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