Search the Insulator Patent Reference Library:

Build your search criteria. The patent must match all the values specified.
Select patent types: Utility   Design   Reissue
Patent number:
Year between: and
Patentee starting with:
Assigned To starting with:
Description containing:
Class:    Subclass:
Click Search when complete:
SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type WHERE (last_name = 'KLEIN') AND (first_name = 'Charles H.') ORDER BY date ASC, patent, type

Total of 3 patents found where: Last Name is 'KLEIN'; First Name is 'Charles H.';

View a patent by clicking on the patent number. You can sort by any of the columns by clicking on the column name.

T / S Patent Date Description Patentee Category Assigned To
U Specimen known 1,563,377 December 1, 1925 Pulling and Transposing Mechanism for Line Wires
Mechanism for pulling multiple wires in order to string them for transposing.
KLEIN, Charles H.
Equipment American Telephone & Telegraph Co.
U 1,912,456 June 6, 1933 Transposition Bracket
Bracket for transposition
KLEIN, Charles H.
Bracket Bell Telephone Laboratories, Inc.
U 2,112,370 March 29, 1938 Wire Spacing Bracket
Bracket attached to crossarms to provide proper space between carrier conductors
KLEIN, Charles H.
Bracket Bell Telephone Laboratories, Inc.

Total of 0.01 seconds