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Inventor

Michael F. Praamsma

Inventor
Santa Monica, CA, US

Overview

3→
Patents
1980–1989
Patent span
Physics
Primary field (CPC G)

Patents· 3 as inventor

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

G03Bprimary
G03BApparatus or arrangements for taking photographs or for projecting or viewing them67%
A47HFurnishings for windows or doors33%
PatentTitleYear
4,846,249'Window shade carrier and carrier assembly'19894,274,131'Light diffusing means for a photographic enlarger'19814,240,738'Light mixing system for a photographic enlarger'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1981Patents assigned to VIVITAR CORP (2)· patent assignee history
1980–1981Based in Santa Monica, CA, US· patent location history
1989Patents assigned to CASTEC INC (1)· patent assignee history
1989Based in Van Nuys, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
VIVITAR CORP21980–1981
CASTEC INC11989
Locations
LocationPatentsSpan
Santa Monica, California, US21980–1981
Van Nuys, California, US11989