https://patentbrief.org/company/docutel-corp Plain-English explanations of patents assigned to Docutel Corp, newest first. en-us Sat, 13 Jun 2026 10:06:25 GMT https://patentbrief.org/patent/us/3761682/atm-cash-dispenser This 1973 patent describes a machine that dispenses cash using a coded credit card, verifies the card's validity, and updates its code after each transaction to prevent fraud. Tue, 25 Sep 1973 00:00:00 GMT https://patentbrief.org/patent/us/3761682/atm-cash-dispenser