CA311762A - Observing apparatus for moving objects - Google Patents

Observing apparatus for moving objects

Info

Publication number
CA311762A
CA311762A CA311762A CA311762DA CA311762A CA 311762 A CA311762 A CA 311762A CA 311762 A CA311762 A CA 311762A CA 311762D A CA311762D A CA 311762DA CA 311762 A CA311762 A CA 311762A
Authority
CA
Canada
Prior art keywords
moving objects
observing apparatus
observing
objects
moving
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
CA311762A
Other languages
French (fr)
Inventor
A. Butler 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.)
BUTLER PATENTS Corp
ROBERT DONNER
Original Assignee
BUTLER PATENTS Corp
ROBERT DONNER
Publication date
Application granted granted Critical
Publication of CA311762A publication Critical patent/CA311762A/en
Expired legal-status Critical Current

Links

CA311762A Observing apparatus for moving objects Expired CA311762A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA311762T

Publications (1)

Publication Number Publication Date
CA311762A true CA311762A (en) 1931-05-26

Family

ID=35271088

Family Applications (1)

Application Number Title Priority Date Filing Date
CA311762A Expired CA311762A (en) Observing apparatus for moving objects

Country Status (1)

Country Link
CA (1) CA311762A (en)

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