11.   Meanwhile a Tequesta, Fla., company has patented a device called the Saf T Lok, a combination lock a gun owner could install on a weapon.

12.   Now a group of Texas inventors has patented a device to train people to know when they are dreaming so they can participate in the stories their minds concoct.

13.   Now he has patented a device that he believes will help skaters practice their jumps.

14.   Settles has already patented his device for drug and explosive detection in airports.

15.   So he patented a device that marks hands until the mark is washed off.

16.   So Ms. Lathrop has patented a device that she says simplifies the recycling of plastic bags.

17.   Stanford University has patented the device and is exploring the possibility of commercial uses, Dai said.

18.   Stephen Taylor of Walsall, West Midlands, England, is patenting a device to protect workers that borrows from airbag technology developed for cars.

19.   They have since patented the device and sold it to other oil production sites.

20.   He refused to have his device patented.