Patent US4975069A successfully refreshed from Google Patents.
US1837718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crane
Assignee: Alliance Machine Co
•
Filing: 1928-08-31
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Granted: 1931-12-22
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Expires: 1948-08-31
Abstract
No abstract record available.
Inventors
- 👤 Kendall David
- 👤 Walter D Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:27
CPC Classifications
B; B66; B66C; B66C13/00; B66C2700/00; B66C2700/01; B66C2700/012; B66C2700/017
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) | 1934-12-21 | 1935-06-22 | 1935-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-12-21 | 1939-06-22 | 1939-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-12-21 | 1943-06-22 | 1943-12-22 | $7700.00 | Window Closed / Lapsed |