US4157643B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
US4157643B1 - - Google Patents
Assignee: Hay and Forage Industries
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Filing: 1977-03-16
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Granted: 1988-05-03
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Expires: 1997-03-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:34
CPC Classifications
A; A01; A01D; A01D89/00; A01F; A01F15/00; A01F15/08; A01F15/10; A01F15/101; A01F2015/102; Y; Y10; Y10S; Y10S56/00; Y10S56/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |