South Africa
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The South African patent office at the time of early aviation was . . . and the current one is . . . .
ZA is an abbreviation in this wiki referring to South Africa.
Patents filed by persons from South Africa: Patent FR-1906-367793, Patent FR-1906-371992, Patent GB-1909-22386, Patent GB-1910-6959, Patent US-1911-983233, Patent GB-1911-17130, Patent FR-1913-457900, Patent GB-1913-26139, Patent GB-1914-17990
