Patent US2549818A successfully refreshed from Google Patents.
US2549818A
Expired / Lapsed
US
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Sealing device
Assignee: Individual
•
Filing: 1945-08-23
•
Granted: 1951-04-24
•
Expires: 1965-08-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Joy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:56
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3268
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1725836A
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US1613066A
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US2076363A
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US2059729A
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US2144736A
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US2189839A
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US2214261A
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US2295160A
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US2313271A
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US2329028A
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US2417828A
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US2451269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |