[go: up one dir, main page]

CA407229A - Blackboard eraser - Google Patents

Blackboard eraser

Info

Publication number
CA407229A
CA407229A CA407229A CA407229DA CA407229A CA 407229 A CA407229 A CA 407229A CA 407229 A CA407229 A CA 407229A CA 407229D A CA407229D A CA 407229DA CA 407229 A CA407229 A CA 407229A
Authority
CA
Canada
Prior art keywords
blackboard eraser
eraser
blackboard
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
CA407229A
Other languages
French (fr)
Inventor
H. Oxley John
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.)
AMERICAN CRAYON Co
Original Assignee
AMERICAN CRAYON Co
Publication date
Application granted granted Critical
Publication of CA407229A publication Critical patent/CA407229A/en
Expired legal-status Critical Current

Links

CA407229A Blackboard eraser Expired CA407229A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA407229T

Publications (1)

Publication Number Publication Date
CA407229A true CA407229A (en) 1942-09-08

Family

ID=35418529

Family Applications (1)

Application Number Title Priority Date Filing Date
CA407229A Expired CA407229A (en) Blackboard eraser

Country Status (1)

Country Link
CA (1) CA407229A (en)

Similar Documents

Publication Publication Date Title
CA407229A (en) Blackboard eraser
CA403239A (en) Fountain pen
CA406066A (en) Fountain pen
CA403240A (en) Fountain pen
CA414753A (en) Blackboard
CA395694A (en) Blackboard
CA405388A (en) Tachymetric compass
CA406927A (en) Paint
CA412352A (en) Writing pen
CA406141A (en) Drafting instrument
CA405871A (en) Can
CA406771A (en) Stencil
CA402573A (en) Sponge rubber
CA404601A (en) Sponge rubber
AU116352B2 (en) Rubber composition
CA404700A (en) Rubber composition
CA405023A (en) Rubber composition
CA406936A (en) Spongy superpolymer
CA403016A (en) Bucksaw
CA406734A (en) Torsiograph
AU117757B2 (en) Gyro-verticals
AU118391B2 (en) Methyl-beta-chloro-acrylate
AU118434B2 (en) Dicbloropropyl-alphachloroacrylate
CA402151A (en) Helicoplane
CA408019A (en) Soundhead