Home
|
FAQ
Search:
Advanced
|
Person
|
Company
|
Type
|
Class
Login
Quick search:
Patent number:
Patent Date:
Patents for John Haythorn
Patents 1 - 1 of 1
Number
Date
Patentee
Title
Type
65,744
Jun. 11, 1867
W. Hay
Improvement in Scale-Rules
rule graduations
Toggle print mode
Show pictures
Copyright © 2002-2024 - DATAMP
