Patent US5042477A successfully refreshed from Google Patents.
Patent US2936563A successfully refreshed from Google Patents.
US2936563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary lawnmower and attachment therefor
Assignee: Sunbeam Corp
•
Filing: 1956-09-26
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Granted: 1960-05-17
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Expires: 1976-09-26
Abstract
No abstract record available.
Inventors
- 👤 Walter S Blume
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:23
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/001; A01D34/003; A01D2101/00; Y; Y10; Y10S; Y10S239/00; Y10S239/06; Y10S56/00; Y10S56/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1631381A
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US1752823A
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US2155220A
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US2566324A
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US2661240A
Cited
US2742751A
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US2796714A
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US2708818A
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US2750708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |