US2895773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable diameter tensed ring piston
Assignee: Individual
•
Filing: 1956-10-22
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Granted: 1959-07-21
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Expires: 1976-10-22
Abstract
No abstract record available.
Inventors
- 👤 Robert K Mcconnaughey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:12
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/315; A61M5/31511; A61M5/31515; A61M5/31513; F; F16; F16J; F16J15/00; F16J15/16; F16J15/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US291690A
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US577682A
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US1165686A
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US1586337A
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US2394687A
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US2592381A
Cited
US2688325A
Cited
US2695613A
Cited
US2847996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |