[go: up one dir, main page]

CA441215A - Element de photochromie - Google Patents

Element de photochromie

Info

Publication number
CA441215A
CA441215A CA441215A CA441215DA CA441215A CA 441215 A CA441215 A CA 441215A CA 441215 A CA441215 A CA 441215A CA 441215D A CA441215D A CA 441215DA CA 441215 A CA441215 A CA 441215A
Authority
CA
Canada
Prior art keywords
colour
yielding element
yielding
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
CA441215A
Other languages
English (en)
Inventor
D. Wilson Cyril
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.)
DuPont Film Manufacturing Corp
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
DuPont Film Manufacturing Corp
Publication date
Application granted granted Critical
Publication of CA441215A publication Critical patent/CA441215A/fr
Expired legal-status Critical Current

Links

CA441215A Element de photochromie Expired CA441215A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA441215T

Publications (1)

Publication Number Publication Date
CA441215A true CA441215A (fr) 1947-05-06

Family

ID=35556447

Family Applications (1)

Application Number Title Priority Date Filing Date
CA441215A Expired CA441215A (fr) Element de photochromie

Country Status (1)

Country Link
CA (1) CA441215A (fr)

Similar Documents

Publication Publication Date Title
CA441215A (fr) Element de photochromie
CA441437A (fr) Element de construction
AU137581B2 (en) Rotametee
CA441054A (fr) Teinture diazoique
CA444906A (fr) Outil diamant
AU135138B2 (en) Hosepipes
AU135436B2 (en) Moils
AU136263B2 (en) Mingler
CA443621A (fr) Tondeuse de cheveux
AU138350B2 (en) Diving-Apparatus
CA444786A (fr) Tourelle revolver
CA444785A (fr) Cabestan
CA439247A (fr) Moraillon
CA439983A (fr) Bateau a moteur
CA440781A (fr) Pelle mecanique sur tracteur
CA441959A (fr) Dithiofuroate
CA442845A (fr) Outil pour pneus
CA442977A (fr) Alpha-beta-dichloro-meta-tolylethane
CA442978A (fr) Alpha-beta-dichloro-para-tolylethane
CA444030A (fr) Projecteur a allonge
CA445159A (fr) Combinaison de radiorecepteur et de phonographe
AU134618B2 (en) Improvements ingrates
AU133725B2 (en) Complete specification
CA444070A (fr) Cuisiniere
CA440980A (fr) Boite de conserve