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Class Information
Number: 238/91
Name: Railways: surface track > Ties > Nonmetallic > Plastic compound > Internal reinforcements > Rods
Description: Reinforcing rods and bars for cement ties.

Sub-classes under this class:

Class Number Class Name Patents
238/92 Crosstied 2

Patents under this class:

Patent Number Title Of Patent Date Issued
8366015 Railroad tie and method for building or adapting a railroad Feb. 5, 2013
5916932 Composite building materials from recyclable waste Jun. 29, 1999
5713518 Railroad cross tie and track continuity detector systems Feb. 3, 1998
5135164 Prestressed concrete railroad tie Aug. 4, 1992
5104039 Railroad tie Apr. 14, 1992
4349150 Concrete sleeper with the fastening housing Sep. 14, 1982
4179067 Railway track hold-down hardware Dec. 18, 1979
4151145 Latex-modified, pretensioned and prestressed structures having enhanced structural load bearing capacity Apr. 24, 1979
4150790 Reinforced molded lignocellulosic crosstie and railway assembly Apr. 24, 1979
4141499 Concrete railroad bed Feb. 27, 1979
4108377 Non-metallic-reinforced molded crosstie Aug. 22, 1978
4098460 Concrete unit prestressed using tendons stressed before concreting, more particularly a railway sleeper Jul. 4, 1978
4034913 Composite railroad tie Jul. 12, 1977
3994436 Composite railway tie Nov. 30, 1976

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