21.   John and her staff hope to develop devices that can detect biological agents, then prevent or stall their spread through a subway system.

22.   Notify Technology, based in San Jose, Calif., has developed a device that lets you check for e-mail at a glance, without logging on.

23.   Pfizer Inc. and U.S. Surgical Corp. are among the companies developing devices to treat the condition.

24.   Possis Medical Inc., developing a device to remove blood clots, called thrombus, could also benefit from two studies presented at the meeting.

25.   Researchers in Ireland are developing a device which loads red blood cells with a drug, then injects the cells back into a patients body.

26.   Researchers working with the International SeaKeepers Society have also developed sampling devices to attach to luxury yachts.

27.   Several companies have developed devices that alert people to auditory signals even if they are deaf or hard of hearing.

28.   The device was developed by Riverside Promotions Inc. of Wilton, Conn., which holds the patent on the audio announcement of a sweepstakes award.

29.   The device was developed by the South African agency Natal Sharks Board in response to a serious problem with great white attacks.

30.   The device was developed to deal with an emergency at a baby food cannery, which needed a way to detect improperly sealed jars before they left the factory.