Tree-ring chronology pens, pencils, key chains, and other...

Details Tree-ring chronology pens, pencils, key chains, and other... Tree-ring chronology pens, pencils, key chains, and other...

2006-12-04

2008-12-23

Walczak, David J (Department: 3751)

Coating implements with material supply

Solid material for rubbing contact or support therefor

Combined

C401S195000, CD19S048000

Reexamination Certificate

active

07467904

ABSTRACT:
A pen comprising wood originating from cutting a tree transversely so it displays a tree's cross section. As a result of the transverse cutting, the product displays a tree's annual growth rings along one axis of the object. Tree-ring analysis is carried out in order to accurately date and subsequently mark the date on one or more of the annual growth rings on the pen. In addition to its operation as a writing instrument, the pen is operated as memorabilia that serves as a “natural” annual chart for important dates of an individual, company, organization, or other entity; a physical object to communicate the natural history of a tree's existence and/or the natural history of its surrounding environment; an educational tool to assist in teaching concepts of dendrochronology and related disciplines (dendroclimatology, dendroarchaeology, dendroecology).

REFERENCES:
patent: 4373393 (1983-02-01), Heikkenen
patent: 4585364 (1986-04-01), Liaw
patent: 4928416 (1990-05-01), Penno
patent: D387088 (1997-12-01), Tseng
patent: D391292 (1998-02-01), Kuo
patent: D530747 (2006-10-01), Leibeck
patent: 7418874 (2008-09-01), Leitinger et al.
patent: 3600810 (1987-07-01), None

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