US PATENT SUBCLASS 15 / 250.47
.~.~.~.~.~.~ Spring type

Current as of: June, 1999
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15 /   HD   BRUSHING, SCRUBBING, AND GENERAL CLEANING

246  DF  ATTACHMENTS {8}
250.001  DF  .~ Optical-member-attachable cleaner (e.g., windshield wiper) {28}
250.361  DF  .~.~ Cleaning element structure {7}
250.43  DF  .~.~.~ Accommodates optical-member having curved surface {1}
250.44  DF  .~.~.~.~ Articulated support structure {2}
250.46  DF  .~.~.~.~.~ Specific joint, hinge, or pivot {1}
250.47.~.~.~.~.~.~ Spring type

DEFINITION

Classification: 15/250.47

Spring type:

(under subclass 250.46) Apparatus wherein the specific hinge, joint, or pivot includes a resilient biasing member.