FR 6.1

From Inventing aviation
Revision as of 23:31, 27 October 2019 by Econterms (talk | contribs) (Text replacement - "|Affiliated concepts=" to "|Keywords=")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

Patent category FR 6.1 or VI.1 was for Construction of ships and gears.[1]

References

This wiki has 18 patents in category "FR 6.1".

Patents in category FR 6.1

Enclosing categories FR 6, French patent classifications, Classifications of French patents, 1904-1958
Subcategories
Keywords USPC 114, Marine
Start year
End year