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US3519169A
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Aggregate metering and spreading system
Assignee: J H HOLLAND CO
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Filing: 1967-11-24
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Granted: 1970-07-07
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Expires: 1987-11-24
Abstract
No abstract record available.
Inventors
- 👤 John H Holland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:17
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/12; E01C19/21; E01C19/20; E01C19/201; E01C19/202; E01C2019/2055; E01C2019/207; E01C2019/209
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1040888A
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US1811324A
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US2893740A
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US2904224A
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US3010612A
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US3072290A
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US3228310A
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GB1017224A
Cited
US3395834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |