US3473008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for feed blending control
Assignee: Leeds and Northrup Co
•
Filing: 1964-06-12
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Granted: 1969-10-14
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Expires: 1984-06-12
Abstract
No abstract record available.
Inventors
- 👤 Theodosios Bay
- 👤 Tai-Seng Chen
- 👤 John W Schwartzenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:03
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/135; G06; G06G; G06G7/00; G06G7/12; G06G7/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB910614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |