Combined exit sign and emergency lamp device
Granted 20 May 1997 · no office action yet
Assignee: National Service Industries, Inc.
Law firm: Law firm · Log in to unlock
Attorney: Attorney · Log in to unlock
Inventors: Edwin L. Hull, Andrew E. Masters, Mark C. Logan, David T. Garza · Examiner: Susan J. Lucas · AU 291 · TC 2900
Life of the patent
2 dated eventsDescription
1 parts›FIG. 1 is a perspective view of a…
FIG. 1 is a perspective view of a combined exit sign and emergency lamp device showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a perspective view thereof taken from a side rear of the device;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a left end elevational view thereof;
FIG. 8 is a perspective view thereof taken from beneath the device;
FIG. 9 is a front elevational view of a second embodiment thereof;
FIG. 10 is a front elevational view of a third embodiment thereof;
FIG. 11 is a front elevational view of a fourth embodiment of the invention;
FIG. 12 is a front elevational view of a fifth embodiment thereof;
FIG. 13 is a perspective view of a combined exit sign and emergency lamp device of a further embodiment; and,
FIG. 14 is a perspective view of a combined exit sign and emergency lamp device of yet another embodiment;
FIG. 15 is a left end elevational view of the embodiment of FIG. 13; and,
FIG. 16 is a left end elevational view of the embodiment of FIG. 14.
Embodiments shown in FIGS. 1-12 of the combined exit sign and emergency lamp device differ only in the locations of the lights.
Claims
1 · 1 independent · depth 1Classifications
1 codesClaim changes
SoonSee which claims were amended, added or cancelled during examination, with every added and removed word marked.
The published claims of this patent are not paired with the granted ones in what we hold.
File wrapper
Chain of title
See the full assignment history — every owner this patent has passed through, with recordation dates and reel/frame numbers.
Log in to unlockTerm & fees
See the term timeline — pendency span, in-force span, the maintenance fees paid and both computed expiry dates.
Log in to unlockValidity challenges
See the validity challenges on record — reexaminations, IPRs and PGRs, with their institution decisions and outcomes.
Log in to unlockCitations
See every patent this one cites and every patent that cites it back — publication, assignee, and how each one was found.
Log in to unlock