US3448778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Level control system
Assignee: The Campbell's Co
•
Filing: 1965-12-07
•
Granted: 1969-06-10
•
Expires: 1985-12-07
Abstract
No abstract record available.
Inventors
- 👤 Joseph D Ramsay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:23
CPC Classifications
B; B65; B65B; B65B57/00; B65B57/10; B65B57/14; B65B57/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2645447A
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US2852937A
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US2961013A
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US3011036A
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US3062994A
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GB939830A
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US3225191A
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US3309511A
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US3368593A
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US3364940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |