USPatentGranted
S

Photographic slide projector

Granted 7 Nov 1978 · no office action yet

Assignee: Rollei-Werke Franke & Heidecke

Law firm: Law firm · Log in to unlock

Attorney: Attorney · Log in to unlock

Inventors: Dieter Mankau · Examiner: Wallace R. Burke · AU 291 · TC 2900

Application
738837
filed 4 Nov 1976
Publication
Not published
not published
Patent· this page
US D250199
granted 7 Nov 1978

Life of the patent

3 dated events
⤢ drag to zoom19761978198019821984198619881990199219941996ProsecutionTerm & fees
ProsecutionTerm & feeshover for detail · click to open

Description

1 parts
›FIG. 1 is a front elevational view of…

FIG. 1 is a front elevational view of a photographic slide projector, showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a right front perspective view thereof;

FIG. 8 is a right front perspective view thereof with a cover section partially removed;

FIG. 9 is a right front perspective view thereof with the cover section completely removed;

FIG. 10 is a left rear perspective view thereof;

FIG. 11 is a top plan view thereof with the cover completely removed;

FIG. 12 is a left side elevational view thereof with the cover removed;

FIG. 13 is a right side elevational view thereof, with the cover removed;

FIG. 14 is a left rear perspective view thereof, with the cover removed;

FIG. 15 is a front elevational view of a second embodiment thereof;

FIG. 16 is rear elevational view thereof;

FIG. 17 is left side elevational view thereof;

FIG. 18 is a top plan view thereof;

FIG. 19 is a bottom view thereof;

FIG. 20 is a right side elevational view thereof;

FIG. 21 is a left rear perspective view thereof; and

FIG. 22 is a right front perspective view thereof.

the grant prints no section headings; every part label below is ours, taken from that part's own first words

Claims

1 · 1 independent · depth 1
1 granted claims

Classifications

1 codes
USPC · US Patent Classification
D16/21

Claim changes

Soon
Coming soonHow the claims changed between publication and grant

See which claims were amended, added or cancelled during examination, with every added and removed word marked.

AmendedAddedCancelledUnchanged

The published claims of this patent are not paired with the granted ones in what we hold.

File wrapper

Pendency
2.0 y
733 days filing → grant
Office actions
0
on the grant's record
Examiner
Wallace R. Burke
art unit 291 · TC 2900
Citations: 0 back · 0 forward

Term & fees

See the term timeline — pendency span, in-force span, the maintenance fees paid and both computed expiry dates.

Log in to unlock

Validity challenges

See the validity challenges on record — reexaminations, IPRs and PGRs, with their institution decisions and outcomes.

Log in to unlock

Citations

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