Patent US3588937A successfully refreshed from Google Patents.
US3588937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Street sweeping broom construction with inclined bristles
Assignee: Industrial Brush Co
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Filing: 1968-12-05
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Granted: 1971-06-29
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Expires: 1988-12-05
Abstract
Abstract A STREET AND INDUSTRIAL SWEEPER BROOM CONSTRUCTION HAVING BRUSH FILAMENTS ARRANGED TO SMOOTHLY AND UNIFORMLY SWEEP A SURFACE WITHOUT THE PRESENCE OF STREAKS THROUGHOUT THE LENGTH OF THE BROOM AND AT SURFACE AREAS BEYOND CORE ENDS OF THE BROOM AND EXTENDING TO DIRECT AND DEBRIS GUIDE MEANS ON A SWEEPING MACHINE, SAID BROOM CONSTRUCTION BEING READILY REVERSIBLE TO OBTAIN MAXIMUM WEAR AND HAVING FILAMENTS INCLINED LONGITUDINALLY TO PROVIDE CONTINUOUS EFFECTIVE NOVEL SURFACE SWEEPING ACTION.
Inventors
- 👤 Donald E Scruggs
- 👤 Charles E Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:06
CPC Classifications
A; A46; A46B; A46B13/00; A46B13/001; A46B13/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |