US2572247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rake cleaner attachment
Assignee: Individual
•
Filing: 1948-12-02
•
Granted: 1951-10-23
•
Expires: 1968-12-02
Abstract
No abstract record available.
Inventors
- 👤 Conway John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:45
CPC Classifications
A; A01; A01D; A01D7/00; A01D7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US394521A
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US416763A
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US870227A
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US974268A
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US1208855A
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US1264750A
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US1502685A
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US1936800A
Cited
US1965663A
Cited
US1958757A
Cited
US2183278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |