Additional improvement patents, 1837-1861 /

में बचाया:
ग्रंथसूची विवरण
OCLC:2646330
निगमित लेखक: United States. National Archives and Records Service
अन्य लेखक: Paulauskas, James A., 1929-
भाषा:English
प्रकाशित: Washington : National Archives and Records Service, General Services Administration, 1977.
श्रृंखला:Special list (National Archives (U.S.)) ; no. 39.
विषय:
Patents > United States.
Patent extensions > United States.
स्वरूप:

सरकारी दस्तावेज Monograph

Note that CRL will digitize material from the collection when copyright allows.

विवरण
वस्तु वर्णन:Includes indexes.
भौतिक वर्णन:vii, 22 p. ; 27 cm.

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