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Coro Patents




Morning Glory Antiques & Jewelry

presents
~


JEWEL CHAT

Costume Jewelry Magazine



Jewelry
Patents
Coro
1901-1979


Information about the jewelry companies comes from personal contacts, ads
and materials, old versions of "The Keystone Jewelry Trade Book" and "American
Jewelry Manufacturers" by Dorothy T. Rainwater.





G. VERRECCHIO, 1938
No. 110,296

brooch
Gene Verrecchio

CORO Duette rhinestone and
enameled pin/clip.
Courtesy of Bobye Syverson

G. VERRECCHIO, 1938
No. 110,469

brooch
Gene Verrecchio

BASKET brooch
with rhinestones and black and red enameling.
View #Y20309

Coro Designers:

Adolph Katz, design director
Gene Verrecchio [Verri] ~1938 to late 1940
Charles E. Pauzat ~1939-1940
Oscar Placco ~1938-1945?
Robert Geissman ~1938
Carol McDonald ~1940
Marion Weeber ~1940-1941
Sidney Pearl ~1941
Lester Gaba ~1941
Victor di Mezza ~1950




Source: Brunalti’s A Tribute to America

CORO- A. KATZ, 1939
No. 116,288
Bracelet
Adolph Katz

G. VERRECCHIO, 1939
No. 117,802

clip
Gene Verrecchio

WHITE enamel flower fur clip
with red and clear rhinestones, circa 1940.
View #Y27305





ADOLPH KATZ, 1939
No. 118,121

clip
Adolph Katz

ADOLPH KATZ, 1939
No. 118,122

clip
Adolph Katz
C.E.PAUZAT, 1939
No. 118,130

brooch
Charles E. Pauzat

CORO Day and Night
brooch with brown enameling on gold tone and clear rhinestones.
View
View
View #C20355





ADOLPH KATZ, 1940
No. 119,306

clip
Adolph Katz

ADOLPH KATZ, 1940
No. 119,307

clip
Adolph Katz

ADOLPH KATZ, 1940
No. 119,308

clip
Adolph Katz

ADOLPH KATZ, 1940
No. 119,309

clip
Adolph Katz




ADOLPH KATZ, 1940
No. 119,756

clip
Adolph Katz

ADOLPH KATZ, 1940
No. 120,024

brooch
Adolph Katz

G. VERRECCHIO, 1941
No. 125,646

brooch
Gene Verrecchio





G. VERRECCHIO, 1941
No. 125,649

brooch
Gene Verrecchio

C. McDONALD, 1940
No. 119,830

pin clip
Carol McDonald

G. VERRECCHIO, 1941
No. 125,647

brooch
Gene Verrecchio

FLOWER brooch with
pearlized flowers, enameled leaves and clear rhinestone accents.
View #Y23497





G. VERRECCHIO, 1941
No. 125,648

brooch
Gene Verrecchio

Enameled and rhinestone brooch as shown in patent at left.
Courtesy of Kim Paff
G. VERRECCHIO, 1941
No. 125,650

brooch
Gene Verrecchio

G. VERRECCHIO, 1941
No. 125,651

brooch
Gene Verrecchio




G. VERRECCHIO, 1941
No. 125,652

brooch
Gene Verrecchio

G. VERRECCHIO, 1941
No. 125,976

brooch
Gene Verrecchio
Enameled bird pins with glass bellies, as shown in patent at left.
Courtesy of Kim Paff




G. VERRECCHIO, 1941
No. 126,490

pin clip
Gene Verrecchio

CORO DUETTE red
enameled birds brooch with rhinestones.
View
#C10718
G. VERRECCHIO, 1941
No. 127,648

combined brooch and locket
Gene Verrecchio



ADOLPH KATZ, 1956
No. 177,837

pin clip
Adolph Katz

ADOLPH KATZ, 1956
No. 177,520

pin clip
Adolph Katz

Utility patents show how a mechanism works… Design patents are for
the way it looks. Jim Katz downloaded almost all the jewelry design
patents from 1867 through 1965 and after 1955, the amount of jewelry design
patents tapers way off in comparison to earlier years.

Coro and Trifari
are responsible for almost half of all jewelry design patents up through the
middle 1950’s. Philippe for Trifari patents seem to disappear after about
1954, and Katz for Coro after 1965.

Jewelry Design Patents – (all approximations):
From 1858 – 1925 1,203 Jewelry Design Patents Granted
From 1925 – 1955 6,528 Jewelry Design Patents Granted
From 1955 – 1965 450 Jewelry Design Patents Granted

As you can see from the following information, patents are still being
granted but after 1965 the jewelry design patents from all the large
manufacturer’s all but disappeared.

All patents – not just jewelry – (all approximations)
By 1971 there were approx. 220,000 design patents granted
By 2003 470,000 design patents granted
By 1971 3,600,000 utility patents granted
By 2003 6,670,000 utility patents granted