Inventor

Ted L. Teach

Inventor

Dayton, OH, US

Overview

22→

Patents

1976–1994

Patent span

Physics

Primary field (CPC G)

Patents· 22 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

E02Fprimary

E02FDredging30%

G01CMeasuring distances, levels or bearings30%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%

G01SRadio direction-finding7%

E01CConstruction of, or surfaces for, roads, sports grounds, or the like3%

F15BSystems acting by means of fluids in general3%

G01BMeasuring length, thickness or similar linear dimensions3%

G05DSystems for controlling or regulating non-electric variables3%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light3%

Y10TTechnical subjects covered by former us classification3%

PatentTitleYear

5,375,663'Earthmoving apparatus and method for grading land providing continuous resurveying'1994 5,334,987'Agricultural aircraft control system using the global positioning system'1994 5,095,629'Laser beam target'1992 4,888,890'Laser control of excavating machine digging depth'1989 4,836,669'Apparatus and method for projection of reference planes of light'1989 4,830,489'Three dimensional laser beam survey system'1989 4,786,178'Apparatus and method for detecting the position and orientation of a reference beam of light'1988 4,770,480'Apparatus and method for providing multiple reference laser beams'1988 4,767,208'Self leveling transmitter for laser alignment systems'1988 4,679,937'Self leveling transmitter for laser alignment systems'1987 4,662,707'Lighthouse structure and compensating lens in reference laser beam projecting apparatus'1987 4,654,856'Laser beam projection device and arrangement for mounting a laser plasma tube therein'1987 4,629,321'Grade setting and calibration arrangement for laser beam projection device'1986 4,526,201'Four-way valve with internal pilot'1985 4,225,226'Laser guidance system for crop spraying aircraft'1980 4,129,224'Automatic control of backhoe digging depth'1978 4,081,919'Backhoe bucket'1978 4,050,171'Depth control for endless chain type trencher'1977 4,034,490'Automatic depth control for endless chain type trencher'1977 4,028,822'Manually operable depth control for trenchers'1977 3,997,071'Method and apparatus for indicating effective digging depth of a backhoe'1976 3,953,145'Laser beam control system for earthworking or similar machines'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1978Patents assigned to LASERPLANE CORP (7)· patent assignee history

1976–1994Based in Dayton, OH, US· patent location history

1976Based in Springfield, OH, US· patent location history

1980–1989Patents assigned to SPECTRA PHYSICS (12)· patent assignee history

1989Based in Huber Heights, OH, US· patent location history

1992–1994Patents assigned to SPECTRA PHYSICS LASERPLANE INC (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SPECTRA PHYSICS	12	1980–1989
LASERPLANE CORP	7	1976–1978
SPECTRA PHYSICS LASERPLANE INC	3	1992–1994

Locations

Location	Patents	Span
Dayton, OH, US	20	1976–1994
Huber Heights, OH, US	1	1989
Springfield, OH, US	1	1976