Geometrical instruments – Miscellaneous – Light direction
Reexamination Certificate
2006-12-26
2006-12-26
Fulton, Christopher W. (Department: 2859)
Geometrical instruments
Miscellaneous
Light direction
C033S287000, C033S651000
Reexamination Certificate
active
07152330
ABSTRACT:
Device for monitoring the state of the substructure of fixed tracks, especially in the transition region of substructure supporting plates, measuring bolts, which, in vertical recesses, pass freely through the track plate above, being fastened at the ends of the substructure plates, which are to be monitored.
REFERENCES:
patent: 1415287 (1922-05-01), Wooster
patent: 4435250 (1984-03-01), Lindgren
patent: 7023539 (2006-04-01), Kowalski
patent: 2002/0083606 (2002-07-01), Monteil et al.
patent: 101 15 412 (2002-10-01), None
patent: 0 962 747 (1999-12-01), None
patent: 11-325901 (1999-11-01), None
Fulton Christopher W.
Jordan and Hamburg LLP
Pfleiderer Infrastrukturtechnik GmbH & Co. KG
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