FR 6

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This was a technological category for French patents maybe till 1880. Category 6 had marine navigation and grew to include aviation, aerostation, aerial navigation.

Around 1879 category 6 was split into categories 6.1 to 6.3, and later 6.4 was added. Let's get the timing clear here.

6.3 may not have appeared until after 1879; an 1870 CdB refers to 6, but not 6.3.

In 1885 (some) aeronautics patents fell under 6.3, "Marine et Navigation. 3. Gréement, Accessoires, etc"; 6.4 existed but was used for port works—relatively unrelated to aeronautics.

6.4 later became reserved for aviation and aerostation.

This wiki has 34 patents in category "FR 6". Other techtypes related to FR 6: MX F

Patents in category FR 6


Enclosing categories French patent classifications, Classifications of French patents, 1904-1958
Subcategories FR 6.1, FR 6.2, FR 6.3, FR 6.4, FR 6.8
Keywords Marine, Navigation
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