Patent US3863524A successfully refreshed from Google Patents.
Patent US2815240A successfully refreshed from Google Patents.
US2815240A
Expired / Lapsed
US
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Suction pads with floating sealing ring
Assignee: VAC U LIFT Co
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Filing: 1955-02-11
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Granted: 1957-12-03
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Expires: 1975-02-11
Abstract
No abstract record available.
Inventors
- 👤 George F Lytle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:41
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/02; B66C1/0212; B66C1/0231
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US438584A
Cited
US1315737A
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US1062579A
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US1294103A
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DE396668C
Cited
CH122139A
Cited
US2132283A
Cited
DE809338C
Cited
US2725255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |