FR 12.6
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Historic French patent classification XII.6 was for Transport and measurement of electricity. The category appeared in 1904.[1] This wiki has 2 patents in category "FR 12.6". Other techtypes related to FR 12.6: Electricity
Patents in category FR 12.6
- Patent FR-1906-371669 (English title: Improvements to electrical devices for transmitting and receiving gunfire control signals, Supplementary to patent: Patent GB-1906-04-12, Filing date: 1906-11-19, Applicant firm: Vickers, Sons, and Maxim)
- Patent FR-1909-400985 (English title: Improvements to electrolytic devices for use in the construction of switches, recorders, meters and other electrical appliances, Inventors: Wilfred Bertram Thorpe, Filing date: 1909-01-12)
References
| Enclosing categories | FR 12 |
|---|---|
| Subcategories | |
| Keywords | Electricity |
| Start year | |
| End year |
