Comated Edilizia S.p.A.
Italian manufacturer of double-locking wedge clamps, self-locking spring clamps, anchor systems, couplers and other accessories for the construction market.
http://www.comated.com

Key-Less-Locking Mechanism
Knollan is a startup company that has completed the development of a very innovative locking mechanism. This mechanism is suitable for all kinds of locks, and for any security level, while offering many additional advantages over existing locks. The Knollan mechanism resembles the idea of a combination lock, but it is unique and entirely different from any existing locking device. It has many special features that lead to commercial strengths, if not market superiority, over existing locking mechanism.
http://www.knollan.com

U.S. Meter Fit Corporation
Manufactured Gas By-pass locking Meter Sets in various sizes ranging from 1.5 million cfh. to 23 million cfh. Products have three locking valves allowing the ability to proof meters without losing service and avoiding re-lights.
http://usmeterfit.com

The "Double-Checked Locking is Broken" Declaration
Details on the reasons - some very subtle - why double-checked locking cannot be relied upon to be safe. Signed by a number of experts, including Sun engineers.
http://www.cs.umd.edu/~pugh/java/memoryModel/DoubleCheckedLocking.html

Electronic Locking Systems
Electronic security systems including electro magnetic locks, key pad entry, proximity readers, solenoid bolts and electric release systems or strikes for use in access control and electronic locking applications.
http://www.electriclock.net/

Long-Lok Fasteners Corporation
Manufacture self-locking fasteners and self-sealing fasteners. Self-locking and self-sealing fasteners handbook, a standard reference of the industry available for download.
http://www.longlok.com/

Dual Deadbolt Lock
A locking mecanism with one deadbolt locking into the side door frame and the other into the upper door frame.
http://www.angelfire.com/ma2/DualDeadboltLock/index.html

P Elements in Drosophila
The natural biology of P-elements, and how it has been harnessed into a powerful genetic tool.
http://engels.genetics.wisc.edu/Pelements/Pt.html

Elements
Periodic table of the elements, packed with data and able to interactively produce useful graphical output. It also speaks!
http://rogerdarlington.members.beeb.net/ShopE.htm

Rediscovery of the Elements
Rediscovery of the elements is a visual tour of the original sites of the discovery of the chemical elements.
http://www.jennymarshall.com/rediscovery1.htm