Patent US2918069A successfully refreshed from Google Patents.
US2918069A
Expired / Lapsed
US
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Sealing rolls for tanks
Assignee: Hanson Van Winkle Munning Co
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Filing: 1958-01-15
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Granted: 1959-12-22
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Expires: 1978-01-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Oliver J Brown
- 👤 Sr Kenneth D Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:37
CPC Classifications
C; C25; C25D; C25D17/00; C25D17/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US654194A
Cited
US2255859A
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US2393203A
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US2650603A
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US2628627A
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US2781535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |