<s>
Flexaret	B-Algorithm
is	O
a	O
brand	O
of	O
cameras	O
manufactured	O
from	O
1939	O
to	O
1970	O
in	O
Czechoslovakia	O
by	O
the	O
company	O
Meopta	O
.	O
</s>
<s>
All	O
models	O
of	O
Flexaret	B-Algorithm
are	O
twin-lens	B-Algorithm
reflex	I-Algorithm
cameras	I-Algorithm
with	O
aluminum	O
body	O
,	O
taking	O
square	O
"	O
6×6	O
"	O
format	O
photographs	O
on	O
a	O
120	O
roll	O
film	O
.	O
</s>
<s>
The	O
development	O
of	O
a	O
new	O
camera	O
called	O
Flexaret	B-Algorithm
started	O
in	O
the	O
post-World	O
War	O
II	O
years	O
in	O
the	O
Meopta	O
company	O
,	O
founded	O
in	O
1946	O
.	O
</s>
<s>
The	O
Flexaret	B-Algorithm
rapidly	O
became	O
popular	O
in	O
Czechoslovak	O
households	O
and	O
its	O
popularity	O
lasted	O
until	O
the	O
1960s	O
.	O
</s>
<s>
The	O
Czech	O
photographer	O
Jan	O
Saudek	O
called	O
Flexaret	B-Algorithm
"	O
our	O
 [ Czech ] 	O
national	O
pride	O
"	O
.	O
</s>
