US2613962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft seal
Assignee: Reconstruction Finance Corp
•
Filing: 1948-04-19
•
Granted: 1952-10-14
•
Expires: 1968-04-19
Abstract
No abstract record available.
Inventors
- 👤 George W Dahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:11
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3204; F16J15/3232; F16J15/3236; F16J15/3284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1697516A
Cited
US1035063A
Cited
US2106293A
Cited
US2212291A
Cited
US2393967A
Cited
US2443332A
Cited
US2467312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-14 | 1956-04-14 | 1956-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-14 | 1960-04-14 | 1960-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-14 | 1964-04-14 | 1964-10-14 | $7700.00 | Window Closed / Lapsed |