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Patent US2840426A successfully refreshed from Google Patents.
US2840426A
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Piston packings
Assignee: TECHNICA ESTABLISHMENT
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Filing: 1954-08-16
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Granted: 1958-06-24
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Expires: 1974-08-16
Abstract
No abstract record available.
Inventors
- 👤 Salansky Franz Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:39
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/162
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2055104A
Cited
US2029367A
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US2196337A
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US2194732A
Cited
US2307671A
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US2428452A
Cited
US2459562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |