Patent US2731284A successfully refreshed from Google Patents.
US2731284A
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US
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Sealing devices
Assignee: Garlock Packing Co
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Filing: 1952-12-05
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Granted: 1956-01-17
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Expires: 1972-12-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Albert M Chambers
- 👤 Edward W Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:13
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3248
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1553460A
Cited
US1854708A
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US2145597A
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US2162104A
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US2173247A
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US2230510A
Cited
US2294105A
Cited
GB591698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |