×
Log in
Get Started
Travel
Technology
Sports
Marketing
Education
Career
Social Media
+ Explore all categories
Report -
1926 – 1928 - AVS · 1926 1928 Loewe 3NF vacuum ... Improved McLeod gauge British Patent 264759 (1927) filed 1926 Kenjiro Takayanagi (1899-1990) Demonstrates a gas focused oscillograph
Select
Pornographic
Defamatory
Illegal/Unlawful
Spam
Other Terms Of Service Violation
File a copyright complaint
Please pass captcha verification before submit form