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 = 'LAPP') AND (first_name = 'John') ORDER BY last_name ASC, first_name, date, patent, type

Total of 4 patents found where: Last Name is 'LAPP'; First Name is 'John';

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
 DANN, John E.
LAPP, John
U 343,014 June 1, 1886 Means for Preventing Disturbances on Telephone Lines
Pre-transposition technique to eliminate induced current on telephone and telegraph wires
DANN, John E.
LAPP, John
Transposition  
 LOCKE, Fred M.
LAPP, John
U Specimen known 402,752 May 7, 1889 Insulator
CD 289.9 (CD 1182), under crossarm type with triple petticoat
LOCKE, Fred M.
LAPP, John
Insulator  
U 441,849 December 2, 1890 Electric Line Hook
Hook made of iron to secure line wire with threaded end to screw in crossarm
LOCKE, Fred M.
LAPP, John
Hook 1/3 to Theodore Norton
 LAPP, John
U Specimen known 1,407,550 February 21, 1922 Method and Machine for Forming Impressions in Plastic Articles
Threading porcelain by gyrating the thread mandrel (""wobbler"" method)
LAPP, John
Thread  

Total of 0.00 seconds