Patent US2528895A successfully refreshed from Google Patents.
US2528895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal ring
Assignee: PELTON WATER WHEEL Co
•
Filing: 1945-10-30
•
Granted: 1950-11-07
•
Expires: 1965-10-30
Abstract
No abstract record available.
Inventors
- 👤 Keith L Mathews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:49
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3204; F16J15/3232
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1531242A
Cited
US1788845A
Cited
US2019757A
Cited
US2208620A
Cited
US2201571A
Cited
GB527363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |