Patent US2793485A successfully refreshed from Google Patents.
US2793485A
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US
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Grass trimmer
Assignee: Porter Cable Machine Co
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Filing: 1954-04-05
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Granted: 1957-05-28
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Expires: 1974-04-05
Abstract
No abstract record available.
Inventors
- 👤 Arthur N Emmons
- 👤 John G Bentley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:01
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/81; A01G; A01G3/00; A01D2101/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2149463A
Cited
US2115265A
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US2263431A
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US2487224A
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US2539619A
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US2597774A
Cited
US2660847A
Cited
US2707362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |