Patent US3380392A successfully refreshed from Google Patents.
US3380392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-pressure roller pump
Assignee: Owatonna Tool Co
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Filing: 1966-05-12
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Granted: 1968-04-30
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Expires: 1986-05-12
Abstract
No abstract record available.
Inventors
- 👤 Jan H Boers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:42
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/06; F04B; F04B23/00; F04B23/04; F04B23/08; F04B23/12; F04C11/00; F04C11/005; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3441; F04C2/3445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |