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US3552760A Expired / Lapsed US ⏱️ 0.0 years remaining

Folding wheelbarrow

Assignee: Individual
•
Filing: 1968-08-22
•
Granted: 1971-01-05
•
Expires: 1988-08-22
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Abstract

Abstract TWEEN. THE COLLAPSING AND UNFOLDING OF THE WHEELBARROW IS EFFECTED THROUGH THT TWO HANDLES THEREFOR WHICH ARE SWIVELY MOUNTED ON THE WHEEL AXLE FOR SWINGING MOVEMENT TOWARD AND AWAY FROM EACH OTHER, APPROPRIATE STOP MEANS LIMITING THE OPENING SWINGING OF THE HANDLES. A FOLDING SIFTER BOTTOM CAN ALSO BE PROVIDED. A FOLDING WHEELBARROW INCLUDING, IN ITS UNFOLDED OPERATIVE POSITION, OUTWARDLY SLOPING SIDE, FRONT AND REAR PANELS SURROUNDING A BOTTOM PANEL IN A MATERIAL-CONFINING MANNER. THE BOTTOM PANEL, AS WELL AS THE FRONT AND REAR PANELS, ARE HINGEDLY MOUNTED TO ONE SIDE PANEL AND SELECTIVELY FOLDABLE THEREAGAINST, AFTER WHICH THE SECOND SIDE PANEL IS ALSO FOLDED AGAINST THE FIRST SIDE PANEL SO AS TO SANDWICH THE BOTTOM, FRONT AND REAR PANELS THEREBE-

Inventors

  • 👤 Richard Sine

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 11:03
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/18; B62B1/20; B62B1/208

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-01-04 1974-07-06 1975-01-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-01-04 1978-07-06 1979-01-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-01-04 1982-07-06 1983-01-05 $7700.00 Window Closed / Lapsed

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