to
N .
[ OORE,
Actiruj Vomrnitssioner Patents.
Gmilled January 1928.
C tif tio .
Signed and sealed this 20th dav March, 1928.
.
It hereby certified that ror appears the printed speciHeat ion the above
numbered patent requiring correction follows: Page after line 57, strike out
the form ula and insert instead
E
- ***)»■
and the said Letters Patent should read witli this correction therein that
the same may conform the record the ease the Patent Office.1,655,114
