Patent US5561007A successfully refreshed from Google Patents.
Patent US2722902A successfully refreshed from Google Patents.
US2722902A
Expired / Lapsed
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Chemical injector plow
Assignee: Individual
•
Filing: 1951-09-17
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Granted: 1955-11-08
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Expires: 1971-09-17
Abstract
No abstract record available.
Inventors
- 👤 Woody D Hyatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:55
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/02; A01C23/023; A01C23/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US169721A
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US221004A
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US642676A
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US889947A
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US1002344A
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GB150140A
Cited
US1425451A
Cited
FR738515A
Cited
FR843895A
Cited
US2439743A
Cited
US2534798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |