Laminated arch members and method of constructing them
Land-use portable knock-down hunting-blind frame
Light-weight, easy-erecting barge hatch cover
Lightening multiple-fold automatic umbrella
Lightening multiple-fold automatic umbrella with control module
Lightening safety automatic umbrella
Lightly operable fully automatic umbrella
Lightweight, portable shelter for backpackers
Linked collapsible shelter structure
Locking device of an automatic opening umbrella