US3490818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft seal
Assignee: RTX Corp
•
Filing: 1967-05-24
•
Granted: 1970-01-20
•
Expires: 1987-05-24
Abstract
No abstract record available.
Inventors
- 👤 George A Bonner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:29
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/44; F16C; F16C19/00; F16C19/02; F16C19/14; F16C19/16; F16C19/163; F16C25/00; F16C25/06; F16C25/08; F16C25/083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1324756A
Cited
US1302641A
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US2042691A
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DE679386C
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GB511127A
Cited
US2623764A
Cited
US2859261A
Cited
US2934480A
Cited
US3004807A
Cited
US3061822A
Cited
US2990220A
Cited
CH397362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |