Patent US3512237A successfully refreshed from Google Patents.
US3512237A
Expired / Lapsed
US
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Rotary grid for cotton cleaner
Assignee: HAMBY COMPANY
•
Filing: 1968-08-05
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Granted: 1970-05-19
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Expires: 1988-08-05
Abstract
No abstract record available.
Inventors
- 👤 Robert L Elder
- 👤 Roger C Hamm
- 👤 Dean P Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:29
CPC Classifications
A; A01; A01D; A01D46/00; A01D46/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49544; Y10T29/49547; Y10T29/49549; Y10T29/49554; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/49872; Y10T403/00; Y10T403/70; Y10T403/7075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2804968A
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US3069918A
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US3137919A
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US3182378A
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US3249363A
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US3444609A
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US3431616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |