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:
Date:
Year between: and
Patentee starting with:
City:
State:
Assigned To starting with:
Description containing:
Category:
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 = 'PITTMAN') AND (first_name = 'Ralph R.') ORDER BY date ASC, patent, type

Total of 6 patents found where: Last Name is 'PITTMAN'; First Name is 'Ralph R.';

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
 1935
U 2,022,386 November 26, 1935 Conductor Support
Little bracket with insulator crown to hold low voltage wire attached to a wood pole (see 2,198,839)
PITTMAN, Ralph R.
Miscellaneous  
 1937
U 2,082,507 June 1, 1937 Pole for Pin
Pole top pin with hook to support wire during stringing
PITTMAN, Ralph R.
Pin  
 1938
U 2,139,332 December 6, 1938 Wire Holder
Wireholder with lag screw
PITTMAN, Ralph R.
WALSH, Carroll H.
Wireholder  
U 2,139,333 December 6, 1938 Sealed Screw Wire Holder
Wireholder with lag screw
PITTMAN, Ralph R.
WALSH, Carroll H.
Wireholder  
 1940
U 2,198,839 April 30, 1940 Conductor Support
Little bracket with insulator crown to hold low voltage wire attached to a wood pole (see 2,022,386)
PITTMAN, Ralph R.
WALSH, Carroll H.
Miscellaneous  
 1944
U 2,343,576 March 7, 1944 Support for Electric Conductors
Knob
PITTMAN, Ralph R.
Knob  

Total of 0.00 seconds