US3528587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic liquid feed device
Assignee: Nedlog Co
•
Filing: 1968-06-25
•
Granted: 1970-09-15
•
Expires: 1988-06-25
Abstract
No abstract record available.
Inventors
- 👤 Leonard G Popinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:34
CPC Classifications
B; B67; B67D; B67D1/00; B67D1/0015; B67D1/0016; B67D2210/00; B67D2210/00146; B67D2210/00149; B67D2210/00152; B67D2210/00154
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1586745A
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US1610889A
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US1874025A
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US2692923A
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US2791239A
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US2972434A
Cited
US3084047A
Cited
US3149753A
Cited
US3323681A
Cited
US3341077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |