PRADIP KANTI MITRA
Land Surveyors in Philadelphia, PA

License number
Pennsylvania SU000590A
Category
Engineers
Type
Professional Land Surveyor
Address
Address
Philadelphia, PA 19118

Professional information

Pradip Mitra Photo 1

Crane

US Patent:
3992836, Nov 23, 1976
Filed:
Mar 5, 1975
Appl. No.:
5/555396
Inventors:
Pradip Kanti Mitra - Philadelphia PA
International Classification:
E04C 310
US Classification:
52223R
Abstract:
The boom of a crane is provided with a prestressing means to place the top of the boom in compression and the bottom of the boom in tension.