Ask Patents Meta
to customize your list.
more stack exchange communities
Reputation and Badges
Start here for a quick overview of the site
Detailed answers to any questions you might have
Discuss the workings and policies of this site
Learn more about Stack Overflow the company
Learn more about hiring developers or posting ads with us
tag has no usage guidance.
Here is what I see as an invalid patent. US6563040
I demonstrated a solar tracking mount I built at a Renewable Energy Fair, MREA Midwest Renewable Energy Association. in Custer. Wisconsin. Several thousand people saw it on or about June 21st 2001. A ...
Sep 22 '12 at 3:44
Duane C. Johnson
newest batteries questions feed
Learn more about your site with the SE Data Explorer. Here's how!
Search patents with Google
Hot Network Questions
Why did Ramsay strike him?
Efficient way to compute a complement while respecting multiplicities
Unfortunately (any) app has stopped. What should I report?
Is it safe to keep a MacBook in the fridge to cool it down?
A riddle in verbs
Could the UK re-join EU after they left?
Did Luke Skywalker ever refer to Obi-Wan as "Uncle Ben?"
Has Valyrian steel ever been used in armor?
Is it possible to enter Russia by train 1-1.5 hours before the visa validity period starts?
Why does ground crew rotate a radial engine's propeller before a motor/cartridge start?
How can I make a "fake" subsection number?
What are the immediate impacts of the UK leaving the EU?
How to create this spikey in Mathematica?
Is Voldemort a liar?
What are the ID EEPROM pins and what can they be used for?
A custom String Builder implementation
What is the infamous instruction LOADALL on the 80286 and what was it used for?
What do people in Westeros eat during Winter?
Why do archery arrows tilt downwards in their descent?
Is it ethical and ok to use recommendation letter of deceased professor?
Will users misunderstand "Last week", "Last year", "Last month" etc?
Too many arguments provided to function-like macro invocation
Convert YYYYMM to MMMYY
Where can I find arrivals / departures timetables for Italian train stations online?
more hot questions
Life / Arts
Culture / Recreation
TeX - LaTeX
Unix & Linux
Ask Different (Apple)
Geographic Information Systems
Science Fiction & Fantasy
Movies & TV
Seasoned Advice (cooking)
Personal Finance & Money
English Language & Usage
Mi Yodeya (Judaism)
Cross Validated (stats)
Theoretical Computer Science
Meta Stack Exchange
Stack Overflow Careers
site design / logo © 2016 Stack Exchange Inc; user contributions licensed under
cc by-sa 3.0