Communications: electrical – Aircraft alarm or indicating systems – Land-based landing guidance
Reexamination Certificate
2006-04-04
2006-04-04
Swarthout, Brent A. (Department: 2636)
Communications: electrical
Aircraft alarm or indicating systems
Land-based landing guidance
C244S11400R, C340S947000, C340S953000
Reexamination Certificate
active
07023361
ABSTRACT:
A runway lighting fixture of the type normally permanently installed at an aircraft installation such as an airport to provide visible light signals to an aircraft, the fixture having an internal, non-visible light source such as an infrared lamp capable of being activated to provide a non-visible light signal to an aircraft specially equipped to see such non-visible signals. An airport normally having arrays of permanent visibly-lighted fixtures can be equipped for long-term or permanent covert operations capability by installing covert, non-visibly-lighted fixtures in place of visibly-lighted fixtures. In a preferred form the covert fixtures are capable of being both visibly and non-visibly lighted to allow normal appearing non-covert operations at the airport, and unobtrusive covert operations whenever needed.
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Wallace Renae L.
Wallace Roger S.
Northern Michigan Patent Law PLC
Swarthout Brent A.
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