Patent US2919054A successfully refreshed from Google Patents.
US2919054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material spreaders and seeders
Assignee: WIL FLO Co
•
Filing: 1954-10-11
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Granted: 1959-12-29
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Expires: 1974-10-11
Abstract
No abstract record available.
Inventors
- 👤 Loren B Waller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:20
CPC Classifications
A; A01; A01C; A01C15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US210462A
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US228913A
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US1705502A
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US1719162A
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US1625345A
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US1691192A
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US1956460A
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US1948861A
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US2321395A
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US2530181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |