US3555792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power operated lawn treating device
Assignee: Individual
•
Filing: 1968-04-17
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Granted: 1971-01-19
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Expires: 1988-04-17
Abstract
Abstract A POWER OPERATED LAWN TREATING DEVICE WHEREIN A RAKE IS SLIDABLY MOUNTED AND WHEREIN A POWER MEANS RECIPROCABLY SLIDES THE RAKE BETWEEN A FORWARD AND A REARWARD POSITION TO THUS COLLECT DEAD GRASS AND OTHER DEBRIS UPON THE LAWN. THE RAKE IS PROVIDED WITH A CONVEX FORWARD SURFACE AND A CONCAVE REAR SURFACE SO THAT THE RAKING ACTION TAKES PLACE ONLY AS THE RAKE IS MOVED FROM ITS FORWARD TO ITS REARWARD POSITION AND SO THAT THE RAKE AUTOMATICALLY CLEANS ITSELF AS IT MOVES FROM ITS REARWARD TO ITS FORWARD POSITION.
Inventors
- 👤 Albert H Tietjen
- 👤 Albert G Heidtman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:47
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D43/00; A01D43/02; A01D2101/00
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |