US PATENT SUBCLASS 16 / 72
.~ Spring

Current as of: June, 1999
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16 /   HD   MISCELLANEOUS HARDWARE

71  DF  CLOSERS {5}
72.~ Spring {4}
73  DF  .~.~> Bow
74  DF  .~.~> Rubber
75  DF  .~.~> Torsional {1}
77  DF  .~.~> Volute

DEFINITION

Classification: 16/72

(under subclass 71) Devices including miscellaneous spring elements.

SEE OR SEARCH THIS CLASS, SUBCLASS:

78, 79 and 80, for springs combined with other elements for closing doors.

85+, for spring devices for checking a closure.

SEE OR SEARCH CLASS

124, Mechanical Guns and Projectors, 7+, for spring devices actuating projectile-throwing arms and subclasses 16+ for spring devices actuating a plunger or other device to impel a projectile.