Grille mounting means and method

Hatch cover assembly

Hatch cover assembly

Hatch cover lock and hinge

Hatch cover locking means

Hatch cover locking mechanism for covered hopper cars

Hinge security stud

Hold down latch assembly for hatch covers

Inclusion of tooth whitening oxidation chemistries into slow rel

Interior door security

Keyless locking device and method

Latch assembly for railway car hatch cover

Latch dead-bolting means

Latch device for railcar hatch covers

Latching mechanism

Latching mechanism

Lock for sliding doors

Lock for sliding windows and doors

Lockable ring assembly for electric meter

Locking apparatus for sliding windows and the like