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US2984506A
Expired / Lapsed
US
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Boot seal
Assignee: Mercantile National Bank of Chicago
•
Filing: 1957-07-02
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Granted: 1961-05-16
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Expires: 1977-07-02
Abstract
No abstract record available.
Inventors
- 👤 Raymond H Andresen
- 👤 Hilmar A Andresen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:50
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2432694A
Cited
US2593899A
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US2474123A
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US2479968A
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US2750215A
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US2784017A
Cited
US2753198A
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US2899219A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |