Patent US1775984A successfully refreshed from Google Patents.
US1775984A
Expired / Lapsed
US
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Dipper-tooth structure
Assignee: Electric Steel Foundry Co
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Filing: 1928-10-23
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Granted: 1930-09-16
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Expires: 1948-10-23
Abstract
No abstract record available.
Inventors
- 👤 Lewis E Younie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:13
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/28; E02F9/2808; E02F9/2816; E02F9/2833; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17923
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) | 1933-09-15 | 1934-03-17 | 1934-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-09-15 | 1938-03-17 | 1938-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-09-15 | 1942-03-17 | 1942-09-16 | $7700.00 | Window Closed / Lapsed |