US PATENT SUBCLASS 400 / 546
.~ To facilitate condensed billing (i.e., by determining a desired limit or amount of retrograde or advance platen movement)

Current as of: June, 1999
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400 /   HD   TYPEWRITING MACHINES

545  DF  FOR LINE-SPACING BY INCREMENTAL ROTATION OF PLATEN {15}
546.~ To facilitate condensed billing (i.e., by determining a desired limit or amount of retrograde or advance platen movement) {2}
547  DF  .~.~> Including stop structure (e.g, traveling stop, etc.) {1}
548  DF  .~.~> With graduated scale (e.g., on drum periphery)

DEFINITION

Classification: 400/546

To facilitate condensed-billing (i.e., by determining a

desired limit or amount of retrograde or advance platen movement):

(under subclass 545) Subject matter wherein significance is attributed to a typewriter that is capable of performing a condensed-billing* operation by regulating the increments (i.e., the step by step turning movements) of rotation of the platen* that cause the record-medium* to move in a line-space* direction and regulating increments of rotation of the platen that cause the record-medium to move in a direction opposite to the line-space direction.

(1) Note. As discussed in the Glossary, section III, the term "condensed-billing" is used in the typewriter industry to refer to an operation wherein one record-medium (e.g., a bill or financial statement) contains information (e.g., an address) and a second record-medium is to contain only a summary of the information. The line-spacing mechanism of this and indented subclasses facilitates the production of the condensed-billing record.