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 (category = 'Slotted') ORDER BY last_name ASC, first_name, date, patent, type

Total of 10 patents found where: Category is 'Slotted';

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
 BAILEY, Charles De Roy
U 303,483 August 12, 1884 Insulator
Slotted spherical insulator supported by box & screw to hold wire		 BAILEY, Charles De Roy
 Slotted  
 BIGEON, Charles
U 234,523 November 16, 1880 Telegraph Insulator
Slotted circular insulator held by split metal screw bracket		 BIGEON, Charles
 Slotted  
 ENGLER, Louis
KRAUSS, Ernest F.
U 28,263 May 15, 1860 Improved Insulator for Electrodes
Slotted enameled iron ring for holding electrodes		 ENGLER, Louis
KRAUSS, Ernest F.
 Slotted  
 LE BARON, Charles L.
U 149,763 April 14, 1874 Improvement in Telegraph Insulators
Slotted block to hold wire held to pole with unique pin		 LE BARON, Charles L.
 Slotted  
U 154,258 August 18, 1874 Improvement in Telegraph Insulators
Slotted insulator to hold wire		 LE BARON, Charles L.
 Slotted  
 PIDGEON, George S.
U 161,058 March 23, 1875 Improvement in Insulating Blocks for Telegraph Lines
Slotted block to hold several wires		 PIDGEON, George S.
 Slotted  
 PRINCE, George W.
U 303,399 August 12, 1884 Electric Wire Insulator
Slotted block insulator to hold wire with a tie		 PRINCE, George W.
 Slotted  
 REYNOLDS, David M.
U 183,865 October 31, 1876 Improvement in Telegraph Insulators
Slotted glass pin to hold wire and cap screwed to secure wire		 REYNOLDS, David M.
 Slotted James M. Brookfield
 SMITH, Leonard O.
U 328,728 October 20, 1885 Insulator
Slotted tubular insulator for crossovers		 SMITH, Leonard O.
 Slotted  
 TELLER, Daniel W.
SAVAGE, William L.
U 70,132 October 22, 1867 Improvement in Telegraph Insulators
Slotted, flanged insulator in slot in crossarm		 TELLER, Daniel W.
SAVAGE, William L.
 Slotted Themselves and W. H. Hoag

Total of 0.01 seconds