| Patent: | US 1888144 |
| Titel: | Visible writing calculating machine |
| Datum: | 15.11.1932 |
| Ort: | |
| Land: | USA |
| Person: | Read David, Jessie P Grandy, Henry H Snelling |
| Firma: | |
| Links im Rechnerlexikon: | |
| Schlagworte: | |
| Link zum Patentamt: (ohne Garantie) |  US1888144 (http://v3.espacenet.com/textdoc?DB=EPODOC&F=0&IDX=US1888144) (espacenet), US1888144 (http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/FPTO/srchnum.htm&r=1&f=G&l=50&s1=1888144.PN.&OS=PN/1888144&RS=PN/1888144) (uspto) |
Aus der Patentschrift US1888144
- DATUM: 15.11.1932
- TITEL: Visible writing calculating machine
- PERSON: JESSIE P GRANDY
- Patent Family: ( Patent:US1888144, Patent:US2114270, Patent:US2179021 )