Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 182/157
Name: Fire escape, ladder, or scaffold > Unitary foldable, rigid scaffold or ladder > Collapsible ladder > Lazy tong type
Description: Device comprising lazy tong construction.










Sub-classes under this class:

Class Number Class Name Patents
182/158 Mechanical or power-extending means 1


Patents under this class:

Patent Number Title Of Patent Date Issued
6802393 Foldable ladder Oct. 12, 2004
5725069 Extendable pyramid ladder system Mar. 10, 1998
4733752 Extensible ladder for boats Mar. 29, 1988
4571144 Tailgate ramp for attaching to the tailgate of a truck Feb. 18, 1986
4527941 Expandable support structure usable as loading ramp Jul. 9, 1985
4076102 Trap door and folding ladder arrangement Feb. 28, 1978











 
 
  Recently Added Patents
Method of manufacturing semiconductor device
Defensin polynucleotides and methods of use
Methods and compositions to treat and detect misfolded-SOD1 mediated diseases
Active gate drive circuit
Image display device and method of changing first EDID with second EDID wherein the second EDID information is compatible with image display device
Traveling vehicle system and self-diagnosis method for the traveling vehicle system
Humidity indicator and method for fabricating the same
  Randomly Featured Patents
Breast tomosynthesis with display of highlighted suspected calcifications
Audio jack connector
Method of aligning and fixing valve components during valve assembly
Systems and methods for forming an image of a specimen at an oblique viewing angle
Exposure apparatus, exposure method, and device manufacturing method
Permanent magnetic power cell circuit for treating fluids to control mineral scale and scale-induced corrosion in pipes and fluid flow systems
Process for inspecting patterned wafers
Yarn guiding device for a weaving machine and weaving machine provided with such a yarn guiding device
Regional map zoom tables
Method of operation and apparatus for optimizing execution of short instruction branches