USPatentGranted
S

Trackball

Granted 24 Sep 1991 · no office action yet

Assignee: Logitech

Law firm: Law firm · Log in to unlock

Attorney: Attorney · Log in to unlock

Inventors: Josef Bismanovsky, Kanae Koh · Examiner: Wallace R. Burke · AU 291 · TC 2900

Application
447701
filed 8 Dec 1989
Publication
Not published
not published
Patent· this page
US D320199
granted 24 Sep 1991

Life of the patent

2 dated events
⤢ drag to zoomJan 1990Apr 1990Jul 1990Oct 1990Jan 1991Apr 1991Jul 1991Oct 1991Prosecution
Prosecutionhover for detail · click to open

Description

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

FIG. 1 is a rear elevational view of a trackball showing our new design.

FIG. 2 is a top plan view thereof,

FIG. 3 is a right side elevational view thereof,

FIG. 4 is a top, front, right side perspective view thereof on an enlarged scale.

FIG. 5 is a left side elevational 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
D14/114

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
1.8 y
655 days filing → grant
Office actions
0
on the grant's record
Examiner
Wallace R. Burke
art unit 291 · TC 2900
Citations: 4 back · 0 forward

Chain of title

⤢ drag to zoom19901992199419961998200020022004200620082010Owner 1Owner 2
Titlehover for detail · click to open

See the full assignment history — every owner this patent has passed through, with recordation dates and reel/frame numbers.

Log in to unlock

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