Patent US2886284A successfully refreshed from Google Patents.
US2886284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flanged sealing ring
Assignee: Individual
•
Filing: 1955-09-13
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Granted: 1959-05-12
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Expires: 1975-09-13
Abstract
No abstract record available.
Inventors
- 👤 Wheatley Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:16
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/12; F16J15/121; F16J15/122; F16K; F16K3/00; F16K3/02; F16K3/0227
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US477608A
Cited
US1947257A
Cited
US2349170A
Cited
US2401377A
Cited
US2438153A
Cited
GB591698A
Cited
US2678187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |