US2190000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bit block for cutter chains
Assignee: Cincinnati Mine Machinery Co
•
Filing: 1935-05-07
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Granted: 1940-02-13
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Expires: 1955-05-07
Abstract
No abstract record available.
Inventors
- 👤 Edwin P Stenger
- 👤 Armin O Bruestle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:27
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/18; E21C35/19; E21C35/193; E21C35/1936; B; B27; B27B; B27B33/00; B27B33/14; B27B33/142; B27B33/144; B28; B28D; B28D1/00; B28D1/02; B28D1/12; B28D1/124; B28D1/125
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) | 1943-02-12 | 1943-08-14 | 1944-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-02-12 | 1947-08-14 | 1948-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-02-12 | 1951-08-14 | 1952-02-13 | $7700.00 | Window Closed / Lapsed |