Patent US4223745A successfully refreshed from Google Patents.
Patent US2719045A successfully refreshed from Google Patents.
US2719045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft seals
Assignee: Individual
•
Filing: 1950-07-21
•
Granted: 1955-09-27
•
Expires: 1970-07-21
Abstract
No abstract record available.
Inventors
- 👤 Grubenmann Johann Jakob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:17
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3248; F16J15/3252
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1222373A
Cited
US1571605A
Cited
US1740929A
Cited
US2055918A
Cited
US2362843A
Cited
US2447411A
Cited
US2622943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-26 | 1959-03-28 | 1959-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-26 | 1963-03-28 | 1963-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-26 | 1967-03-28 | 1967-09-27 | $7700.00 | Window Closed / Lapsed |