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POST-OFFICE DIEECTORY ADVERTISER.
149
OFFICES FOR
BEITISH AND FOREIGN PATENTS,
AND THE
REGISTRATION OF DESIGNS AND TRADE MARKS,
GLASGOW AND LONDON,
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^T. JOHN VINCENT DAY,
■ ASSOC. INST. C.E.,
SOLICITOR.
F.E.S.E.,
,GiyiL ENGINEER.
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Protected completely or provisionally. Opinions on Infringements. Prolongations Solicited.
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as a Mechanical Engineer, since 1833, and as a Patejit Agent since 1849,
and his intimate knowledge of all the important Patented Inventions connected
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THE INVENTOR'S GUIDE,
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