CA517442A - Optical systems for the production of a beam of light - Google Patents

Optical systems for the production of a beam of light

Info

Publication number
CA517442A
CA517442A CA517442A CA517442DA CA517442A CA 517442 A CA517442 A CA 517442A CA 517442 A CA517442 A CA 517442A CA 517442D A CA517442D A CA 517442DA CA 517442 A CA517442 A CA 517442A
Authority
CA
Canada
Prior art keywords
production
light
optical systems
optical
systems
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
CA517442A
Other languages
French (fr)
Inventor
A. Stevens Sydney
A. Sheppard Edward
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.)
Siemens Mobility Ltd
Original Assignee
Westinghouse Brake and Signal Co Ltd
Publication date
Application granted granted Critical
Publication of CA517442A publication Critical patent/CA517442A/en
Expired legal-status Critical Current

Links

CA517442A Optical systems for the production of a beam of light Expired CA517442A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA517442T

Publications (1)

Publication Number Publication Date
CA517442A true CA517442A (en) 1955-10-11

Family

ID=35670637

Family Applications (1)

Application Number Title Priority Date Filing Date
CA517442A Expired CA517442A (en) Optical systems for the production of a beam of light

Country Status (1)

Country Link
CA (1) CA517442A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3568177A (en) * 1966-09-02 1971-03-02 Central Electr Generat Board Multicolor indicators

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3568177A (en) * 1966-09-02 1971-03-02 Central Electr Generat Board Multicolor indicators

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