Patent US3582547A successfully refreshed from Google Patents.
US2658321A
Expired / Lapsed
US
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Grass seed harvester
Assignee: ARMSTRONG CARSON Manufacturing Co
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Filing: 1949-10-03
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Granted: 1953-11-10
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Expires: 1969-10-03
Abstract
No abstract record available.
Inventors
- 👤 Armstrong Hugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:35
CPC Classifications
A; A01; A01D; A01D45/00; A01D45/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US637281A
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US789233A
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US897844A
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US1600877A
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US1735104A
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US1668064A
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US2204115A
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US2412002A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |