Patent:GB191210855
Patent: | GB 191210855 |
Titel: | Improvements in Date Calculating Devices |
Datum: | 28.11.1912 |
Ort: | |
Land: | Großbritannien |
Person: | Kerr David Smith |
Firma: | |
Links im Rechnerlexikon: | Datumsrechner |
Schlagworte: | |
Link zum Patentamt: (ohne Garantie) | GB191210855 |
Aus der Patentschrift GB191210855
"Adding and subtracting apparatus. For calculating dates, a wooden or other base has two grooves and is divided on back, front, and ends into 365 parts numbered from unity in each direction. In each groove slides a strip also divided into 365 parts and inscribed one, 13, with the month and days of the month, the other, 14, with the days of the week. " (aus der Patentschrift)
- DATUM: 28.11.1912
- TITEL: Improvements in Date Calculating Devices.
- PERSON: KERR DAVID SMITH CA