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
tag has no wiki summary.
Secure telephone-based payments - Patent application - Prior art request
US patent application 2220110228919 (USPTO link) seems to be trying to patent an on/off switch for DTMF audio on telephone networks. The key claims are these (effectively the first three): A ...
Jul 24 '13 at 9:31
newest pci-dss questions feed
Search patents with Google
Hot Network Questions
Using all of the data
Logic to test for 3 of 4
What's the difference between being spatiotemporally isolated and causally isolated?
Can I abandon my Kerbonaut in space?
Is it appropriate for an employer to ask skilled professionals to do manual labor?
Good slide design for teaching?
How to teach a toddler to identify colors correctly?
An exotic sequence
How are the Taylor Series derived?
How to see the output produced by make install in freebsd
I am considering leasing a new car for my ex-wife. What can go wrong?
What's the inspiration for the owlbear?
How to draw an arrow with a different head?
Windows startup manager
Space between images
Reverse a string word by word
Mandelbrot image in every language
Why is "distro", rather than "distri", short for "distribution" in Linux world?
Alphanumeric Hello World
Evaluating and negotiating a start-up package
Is there a secular, non vulgar alternative to "for heaven's sake"?
How to multiply a data file with another index data file?
Why can we still crack snapchat photos in 12 lines of Ruby?
Fahrenheit 451 time period
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 Overflow
Stack Overflow Careers
site design / logo © 2014 stack exchange inc; user contributions licensed under
cc by-sa 3.0