CA993303A - Tobacco smoke filter - Google Patents

Tobacco smoke filter

Info

Publication number: CA993303A
Authority: CA; Canada
Prior art keywords: tobacco smoke; smoke filter; filter; tobacco; smoke
Prior art date: 1972-09-11
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

CA242,384A

Inventor

Richard M. Berger

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.)

Filtrona Richmond Inc

Original Assignee

American Filtrona Corp

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.)

1972-09-11

Filing date

1975-12-23

Publication date

1976-07-20

1972-09-11 Priority claimed from US00287803A external-priority patent/US3811451A/en

1975-12-23 Application filed by American Filtrona Corp filed Critical American Filtrona Corp

1975-12-23 Priority to CA242,384A priority Critical patent/CA993303A/en

1976-07-20 Application granted granted Critical

1976-07-20 Publication of CA993303A publication Critical patent/CA993303A/en

Status Expired legal-status Critical Current

Links

CA242,384A 1972-09-11 1975-12-23 Tobacco smoke filter Expired CA993303A (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
CA242,384A CA993303A (en)	1972-09-11	1975-12-23	Tobacco smoke filter

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
US00287803A US3811451A (en)	1972-09-11	1972-09-11	Tobacco smoke filter
CA180,762A CA991046A (en)	1972-09-11	1973-09-11	Tobacco smoke filter
CA242,384A CA993303A (en)	1972-09-11	1975-12-23	Tobacco smoke filter

Publications (1)

Publication Number	Publication Date
CA993303A true CA993303A (en)	1976-07-20

Family

ID=27163034

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA242,384A Expired CA993303A (en)	1972-09-11	1975-12-23	Tobacco smoke filter

Country Status (1)

Country	Link
CA (1)	CA993303A (en)

1975
- 1975-12-23 CA CA242,384A patent/CA993303A/en not_active Expired

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