Patents for Inventions. Abridgments of Specifications

Auteur:
Patent Office
ISBN:
9780217247283
ISBN10:
0217247288
Taal:
Engels
Bindwijze:
Paperback
Publicatiedatum:
15-01-2012
Geillustreerd:
Nee
Pagina's:
140 pagina's

Waar te koop:


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Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: PREFACE. The Indexes to Patents are now so numerous and costly as to render their purchase inconvenient to a large number of inventors and others, to whom they have become indispensable. To obviate this difficulty, short abstracts or abridgments of the Specifications of Patents under each head of invention have been prepared for publication separately, and so arranged as to form at once a Chronological, Alphabetical, Subject-matter, and Reference Index to the class to which they relate. As these publications do not supersede the necessity for consulting the Specifications, the prices at which the printed copies of the latter are sold have been added. The number of Specifications from the earliest period to the end of the year 1866 amounts to 59,222. A large proportion of the Specifications enrolled under the old law, previous to 1852, embrace several distinct inventions, and many of those filed under the new law of 1852 indicate various applications of the single invention to which the Patent is limited. Considering, therefore, the large number of inventions and applications of inventions to be separately dealt with, it cannot be doubted .that several properly belonging to the group which forms the subject of this volume have been overlooked. In the progress of the whole work such omissions will, from time to time, become apparent, and be supplied in second or supplemental editions. This volume contains Abridgments of Specifications to the end of the year 1866. From that date the Abridgments will be found in chronological order in the " Chronological " and Descriptive Index " (see List of Works at the end of this book). It is intended, however, to publish these Abridgments in classes as soon as the Abridgments of all the Specifications from the earliest period to the e...


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Algemene informatie

Titel:
Patents for Inventions. Abridgments of Specifications
ISBN:
9780217247283
ISBN-10:
0217247288
Auteur:
Patent Office

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