Ask Patents Meta
to customize your list.
more stack exchange communities
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
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 invalidation us6563040 questions feed
View patent us6563040
Search patents with Google
Structure for supporting a photovoltaic module in a solar energy collection system
May 13, 2003
Oct 11, 2001
Oct 11, 2001
Herbert T. Hayden,
Jefferson G. Shingleton
Hot Network Questions
Why didn't they just take the ring to the Valinor?
Is there an equivalent of "reverie" where one is lost in unpleasant thoughts?
Apply function to every element of list regardless of depth
Are the bit patterns of NaNs really hardware-dependent?
Find intersection points with V10
Drawing function in tikz
Make NPCs hard to interrogate
Sharp pods under airliner wings
How can I make a slide rule in TikZ?
Number formatting: use of digit separators in manuscripts
Is there a way to hop up onto a parallel curb?
Write the whole of the holed using the unholed
As a PhD student in Germany, would I retain student status for tax purposes?
Was the American Civil War the “bloodiest civil war in history”?
Example of #P-intermediate problem
How important is it to get you dog vaccinated for heartworms in India?
If an inequality is true for all natural numbers, is it necessarily true for all real numbers inbetween?
How do you coat perfectly round truffles with melted chocolate?
Dispel Magic vs multiple summons
Managing Magento csv Translation Files
Keeping comments positive
On-hit vulnerability with damage on the same attack
A flight I booked months ago just got rescheduled dramatically, into a time that is not possible for me, what can I do?
Camera Lens or Megapixel value or Both defines the quality and clarity of the picture?
more hot questions
Life / Arts
Culture / Recreation
TeX - LaTeX
Unix & Linux
Ask Different (Apple)
Geographic Information Systems
Science Fiction & Fantasy
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 © 2014 stack exchange inc; user contributions licensed under
cc by-sa 3.0