Patent US2561500A successfully refreshed from Google Patents.
US2561500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lawn cleaner
Assignee: Individual
•
Filing: 1948-02-14
•
Granted: 1951-07-24
•
Expires: 1968-02-14
Abstract
No abstract record available.
Inventors
- 👤 D Astici Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:13
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/02; E01H1/04; E01H1/045; A; A01; A01G; A01G20/00; A01G20/40; A01G20/43
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US283415A
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US336728A
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US370361A
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US426882A
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US435183A
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US1911535A
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US810547A
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US969556A
Cited
US1507317A
Cited
US1580600A
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US1939385A
Cited
US2361637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |