Patent:US3604621
Brevetto: | US 3604621 |
Titolo: | Improved Slide Rule Arrangement |
Data: | 14.09.1971 |
Luogo: | |
Nazione: | Stati Uniti |
Persona: | Walter S. Drummond |
Ditta: | |
Link interni: | Rechenschieber |
Keywords: | |
Link al brevetto: (without guarantee) | ![]() ![]() |
- DATUM: 14.09.1971
- TITEL: IMPROVED SLIDE RULE ARRANGEMENT
- PERSON: WALTER S DRUMMOND JR
- Patent Family: ( Patent:JP49007520B, Patent:US3604621 )