NIGTATIX/32 Gen
3rd February 1969
B.D. Freat=n, Fsq.,
Patents Departmentp
The Imperial Tobacco Group LirrIted,
104 Temple Street,
BRISTOL, I .
Dear Mr. Freemaa,,
Pnoer Filters
Foll_vitvT our telephone conversation of Thursday 30th January,
I now have pleasure in -aclosinp sora information on the Patent
position regarding Paper Filters. The summary entitled "Schweitzer
Filter3l' was originaily prepared in April 1962 and has been revised
in 1968.
The del,?tcd portion is part of the orif,-',rw-l 19692 version.
The patent survcy, which I also enclose, wnz nrepared before u7
tinte ami has two par@e 51s, for some re-taoa which I do not under-
stand.
I hope you will find this of intor.-at aad wI.I.J. be grateful if
you would return the patents survey in due course as this is tho
only copy I have.
Yours sincerely,
111'.G. Ivinsoa
Enc.
cc
N10
BATCo document for Province of BritiSh Columbia 19 April 1999