Patent EP0056934A2 successfully refreshed from Google Patents.
US2112349A
Expired / Lapsed
US
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Adjustable connection for tool heads and operating handles
Assignee: Cleveland Formgrader Co
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Filing: 1936-06-16
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Granted: 1938-03-29
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Expires: 1956-06-16
Abstract
No abstract record available.
Inventors
- 👤 Elroy F Schumacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:43
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/22; E01C19/44; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32114; Y10T403/32131; Y10T403/32155; Y10T403/32254; Y10T403/32262; Y10T403/32286
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) | 1941-03-28 | 1941-09-27 | 1942-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-03-28 | 1945-09-27 | 1946-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-03-28 | 1949-09-27 | 1950-03-29 | $7700.00 | Window Closed / Lapsed |