USPTO trademark record

BACTO

Dead mark · Owner DIFCO LABORATORIES INCORPORATED · Classes 1, 5

Mark details

Owner: DIFCO LABORATORIES INCORPORATED
Serial number: 72030573
Registration number: 0663636
Status: EXPIRED (dead)
Classes: 1 (Chemicals), 5 (Pharmaceuticals)
Filed: 1957-05-23
Registered: 1958-07-01
Goods / services: DEHYDRATED CULTURE MEDIA INCLUDING BROTHS AND AGARS; PREPARED AND STERILIZED CULTURE MEDIA INCLUDING BROTHS AND AGARS; INGREDIENTS OF CULTURE MEDIA INCLUDING PEPTONES, HYDROLYSATES, EXTRACTS, BILE PR…

Register data as of 2026-11-08. Records can trail live filings — check the official USPTO search for the latest status before filing.

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