Inventor
Francis H. Shepard, Jr.
Inventor
Summit, NJ, US
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B41Bprimary
B41BMachines or accessories for making, setting, or distributing type23%
G09GArrangements or circuits for control of indicating devices using static means to present variable information23%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters14%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
B41JTypewriters5%
G05BControl or regulating systems in general5%
G05DSystems for controlling or regulating non-electric variables5%
G06FElectric digital data processing5%
H05BElectric heating5%
PatentTitleYear
4,779,034'Forced commutation for variable speed motor'19884,658,343'Fluorescent lamp driver'19874,600,872'Apparatus for variable speed drive of an induction motor from a fixed frequency AC source'19864,509,004'Apparatus for variable speed drive of an induction motor from a fixed frequency AC source'19854,348,738'Electronic typographical display device with justification feature'19824,242,622'Stabilized non-linear servomechanism'19804,207,612'Electronic typographical display device with justification feature'19804,178,628'Switching type regulated power supply'19794,176,977'Proportional carrier control and moving mechanism for electric typewriter'19794,153,940'Electronic typographic apparatus'19794,141,079'Electronic typographic apparatus'19794,054,948'Proportional spacing and electronic typographic apparatus'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1980Patents assigned to REALTY IND CORP (4)· patent assignee history
1977–1988Based in Summit, NJ, US· patent location history
1979–1982Patents assigned to R & I PATENT CORP (3)· patent assignee history
1979Patents assigned to REALTY & IND CORP LTD (1)· patent assignee history
1985–1988Patents assigned to SHEPARD JR FRANCIS H (4)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| REALTY IND CORP | 4 | 1977–1980 |
| SHEPARD JR FRANCIS Hself | 4 | 1985–1988 |
| R & I PATENT CORP | 3 | 1979–1982 |
| REALTY & IND CORP LTD | 1 | 1979 |
Locations
| Location | Patents | Span |
|---|---|---|
| Summit, New Jersey, US | 12 | 1977–1988 |