Patent US1698820A successfully refreshed from Google Patents.
US2900978A
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US
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Suction device
Assignee: Svenska AB Gasaccumulator
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Filing: 1954-10-15
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Granted: 1959-08-25
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Expires: 1974-10-15
Abstract
No abstract record available.
Inventors
- 👤 Johannisson Dag Olof Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:39
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/14; F04F5/16; F04F5/20; F04F5/22; A; A61; A61M; A61M1/00; A61M1/80; A61M1/804
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) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |