US2454036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid seal for shafts
Assignee: SIMPSON CATHERWOOD LEONARD
•
Filing: 1945-01-31
•
Granted: 1948-11-16
•
Expires: 1965-01-31
Abstract
No abstract record available.
Inventors
- 👤 Clayton-Wright Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:05
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3204; F16J15/3208; F16J15/3212
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1621272A
Cited
US1802177A
Cited
US1924555A
Cited
GB481331A
Cited
US2162104A
Cited
DE700403C
Cited
US2165052A
Cited
GB541336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |