Nextag provides variety of restroom signs with price comparison, reviews and free delivery. Also restroom signs could be found at local hardware store.
I found a website called www.uline.com that sells restroom signs for what looks like $15 a sign. Plus they have same day shipping, which is really good if you're in a great need for restroom signs.
One can buy restroom signs in many places. A few of them being, Amazon, Ebay, Complaincesigns, justbathroomsigns, Lowes, Staples, nextag, and stopsignsandmore.
You can get cheap bathroom signs for your office at a place called The WEBstaurant Store. They have a variety of different restroom signs and they range in price from $2.99 to $4.99.
Restroom signs can be made easily and cheaply by drawing or writing on a piece of paper and tacking it to the door with doubleback sticky tape. One can laminate the paper for added durability, ease of cleaning and a more professional look.
Any hardware store will have proper bathroom locks that indicate occupancy of the restroom. Also, check homewares shops as they sometimes supply these items too.
You can find the best deal on restroom signs by going to either of the following websites. You can look on www.ebay.com or www.amazon.com for great prices and deals
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A person
The logo for Android is a green robot which was partially inspired by the universally recognized symbol for a human on restroom signs.
This is a site that you can purchase bathroom signs from. http://www.seton.com/signs/office-engraved/restroom-signs.html You might also try office supply stores in your area if you need one right away and can't wait for shipping.
It was invented, not discovered.