Patent US1689839A successfully refreshed from Google Patents.
Patent US1819394A successfully refreshed from Google Patents.
US1819394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing
Assignee: Link Belt Co
•
Filing: 1930-11-21
•
Granted: 1931-08-18
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Expires: 1950-11-21
Abstract
No abstract record available.
Inventors
- 👤 Marcus B Tark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:37
CPC Classifications
B; B01; B01D; B01D21/00
Claims Analysis
Total Claims: 0
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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) | 1934-08-17 | 1935-02-16 | 1935-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-08-17 | 1939-02-16 | 1939-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-08-17 | 1943-02-16 | 1943-08-18 | $7700.00 | Window Closed / Lapsed |