BE589138A - Derivatives of 1,3,3-trimethyl-spirò (2'H-14-benzopyrance-2-2'-indoline). - Google Patents

Derivatives of 1,3,3-trimethyl-spirò (2'H-14-benzopyrance-2-2'-indoline).

Info

Publication number
BE589138A
BE589138A BE589138A BE589138A BE589138A BE 589138 A BE589138 A BE 589138A BE 589138 A BE589138 A BE 589138A BE 589138 A BE589138 A BE 589138A BE 589138 A BE589138 A BE 589138A
Authority
BE
Belgium
Prior art keywords
spirò
benzopyrance
indoline
trimethyl
derivatives
Prior art date
Application number
BE589138A
Other languages
French (fr)
Inventor
Elliot Berman
Original Assignee
Ncr Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ncr Co filed Critical Ncr Co
Publication of BE589138A publication Critical patent/BE589138A/en

Links

BE589138A 1959-04-03 1960-03-29 Derivatives of 1,3,3-trimethyl-spirò (2'H-14-benzopyrance-2-2'-indoline). BE589138A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80383659A 1959-04-03 1959-04-03

Publications (1)

Publication Number Publication Date
BE589138A true BE589138A (en) 1960-07-18

Family

ID=32106010

Family Applications (1)

Application Number Title Priority Date Filing Date
BE589138A BE589138A (en) 1959-04-03 1960-03-29 Derivatives of 1,3,3-trimethyl-spirò (2'H-14-benzopyrance-2-2'-indoline).

Country Status (3)

Country Link
AT (1) AT220147B (en)
BE (1) BE589138A (en)
DK (1) DK101524C (en)

Also Published As

Publication number Publication date
AT220147B (en) 1962-03-12
DK101524C (en) 1965-04-26

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