Diving helmet

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Information

Patent Grant
D331819

References
Source

Patent Number
D331,819
Date Filed
Tuesday, June 12, 1990
35 years ago
Date Issued
Tuesday, December 15, 1992
33 years ago

Inventors
- Masahiko Kaburaki
Original Assignees
- Tohgun Kigyo Co., Ltd.
Examiners
- Word; A. Hugo
- McInroy; Ruth
Agents
- Zarley, McKee, Thomte, Voorhees & Sease

US Classifications
- D29 - Equipment for safety, protection, and rescue
Field of Search
- US
- D29 7-9
- D29 12-13
- D29 15-18
- 002 21 R
- 002 21 A
- 002 410
- 002 421-425
- 002 9
- 002 205
- 128 20127
- 128 20129
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a diving helmet, as shown.

Priority Claims (1)

Number	Date	Country	Kind
1-47650	Dec 1989	JPX

US Referenced Citations (8)

Number	Name	Date	Kind
D168027	Avant	Jan 1953
D181887	Stuart et al.	Jan 1958
D214862	Jones	Aug 1969
D227196	Onswold	Jun 1973
D242881	Jones	Jan 1977
D246271	Cerniway et al.	Nov 1977
D261073	Spruill et al.	Oct 1981
D320868	Kumagai et al.	Oct 1991

Non-Patent Literature Citations (1)

Entry
Hartley's Undersea Walk, presumably 1987.