Diaphragm

United States of America Patent

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Feb 28, 1984
Grant Date
N/A
app pub date
Oct 27, 1980
filing date
Oct 27, 1980

priority date (Note)
Expired

status (Latency Note)

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Abstract

A diaphragm having a pattern of wrinkles adapted so that the diaphragm is both radially and tangentially expandable with respect to a reference point in that central portion.

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Patent Owner(s)

Patent Owner	Address
SETRA SYSTEMS INC A CORP OF MA	ONE STRATHMORE RD NATICK MA 01760

International Classification(s)

B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....

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[Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Briefer, Dennis K	Berlin, MA	22	530

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Diaphragm

Number of patents in Portfolio can not be more than 2000

United States of America Patent

06200790

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Patent Longevity Expired	Forward Citations

PATENT NO	4434203
SERIAL NO	06200790
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06200790

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