THE CALDWELL GROUP, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B66C CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES 526
 
  
 
H01H ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 193

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9359174 Composite lifting beamFeb 20, 14Jun 07, 16[B66C]
8870253 Lockout switch apparatus and methodDec 26, 12Oct 28, 14[H01H, B66C]
7380849 Remote release apparatus and method for lifting and releasing a loadOct 24, 05Jun 03, 08[B66C]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2016/0214,837 COMPOSITE LIFTING BEAMAbandonedApr 05, 16Jul 28, 16[B66C]
7543868 Mechanically actuated vacuum lifting deviceExpiredApr 12, 06Jun 09, 09[B66C]
5297830 Automatic load sensing vacuum valveExpiredApr 05, 93Mar 29, 94[B66C]
D342881 Hold-down clamp for weldingExpiredJul 15, 92Jan 04, 94[]
D298209 Hold-down clamp for weldingExpiredAug 15, 85Oct 25, 88[]
4747634 Apparatus for suspending a lifting padExpiredDec 18, 86May 31, 88[B66C]
4685714 Lifting assemblyExpiredDec 18, 86Aug 11, 87[B66C]

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