Patent US2144691A successfully refreshed from Google Patents.
US2144691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing seal
Assignee: S&K Industries Inc
•
Filing: 1937-11-13
•
Granted: 1939-01-24
•
Expires: 1957-11-13
Abstract
No abstract record available.
Inventors
- 👤 Alois H Schmal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:46
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/72; F16C33/76; F16C33/78; F16C33/784; F16C33/7843; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3436; F16J15/3456; F16C19/00; F16C19/02; F16C19/04; F16C19/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-01-23 | 1942-07-25 | 1943-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-01-23 | 1946-07-25 | 1947-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-01-23 | 1950-07-25 | 1951-01-24 | $7700.00 | Window Closed / Lapsed |