Patent US1689442A successfully refreshed from Google Patents.
US1689442A
Expired / Lapsed
US
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Solenoid brake
Assignee: Harnischfeger Corp
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Filing: 1926-04-14
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Granted: 1928-10-30
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Expires: 1946-04-14
Abstract
No abstract record available.
Inventors
- 👤 George J Lexa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:12
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/74; H; H01; H01H; H01H50/00; H01H50/44; H01H50/46
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) | 1931-10-30 | 1932-04-30 | 1932-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-10-30 | 1936-04-30 | 1936-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-10-30 | 1940-04-30 | 1940-10-30 | $7700.00 | Window Closed / Lapsed |