Assignee
CELFIL CO
4 granted patents·55 citations·filing 1973–1980
Top patents by PatentIndex Score
4 records- 0165US4289725AMaterial web for the manufacture of filter rods for tobacco products and apparatus and process for producing such webCELFIL CO·Filed 1980·Granted Sep 15, 1981·21 cites·8 claims
- 0265US4003684AApparatus for treating webs of filtering material for tobacco product filters, particularly cigarette filtersCELFIL CO·Filed 1974·Granted Jan 18, 1977·19 cites·10 claims
- 0348US3930935AApparatus for making webs of filtering material for tobacco product filters, particularly cigarette filtersCELFIL CO·Filed 1973·Granted Jan 6, 1976·11 cites·3 claims
- 0437US4285650AApparatus for producing tobacco product filter rodsCELFIL CO·Filed 1979·Granted Aug 25, 1981·4 cites·13 claims
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