CA540145A - Safety helmet - Google Patents

Safety helmet

Info

Publication number
CA540145A
CA540145A CA540145A CA540145DA CA540145A CA 540145 A CA540145 A CA 540145A CA 540145 A CA540145 A CA 540145A CA 540145D A CA540145D A CA 540145DA CA 540145 A CA540145 A CA 540145A
Authority
CA
Canada
Prior art keywords
safety helmet
helmet
safety
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
CA540145A
Other languages
French (fr)
Inventor
I. Westaway George
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 CA540145A publication Critical patent/CA540145A/en
Expired legal-status Critical Current

Links

CA540145A Safety helmet Expired CA540145A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA540145T

Publications (1)

Publication Number Publication Date
CA540145A true CA540145A (en) 1957-04-30

Family

ID=35697281

Family Applications (1)

Application Number Title Priority Date Filing Date
CA540145A Expired CA540145A (en) Safety helmet

Country Status (1)

Country Link
CA (1) CA540145A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3278867A (en) * 1963-08-27 1966-10-11 Bell Telephone Labor Inc Compact ultrasonic strip delay line having sharp bend in delay medium
US5101517A (en) * 1990-07-06 1992-04-07 Willie Douglas Sports helmet with transparent windows in the side walls

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3278867A (en) * 1963-08-27 1966-10-11 Bell Telephone Labor Inc Compact ultrasonic strip delay line having sharp bend in delay medium
US5101517A (en) * 1990-07-06 1992-04-07 Willie Douglas Sports helmet with transparent windows in the side walls

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