Patent US1920389A successfully refreshed from Google Patents.
US1920389A
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Shearing mechanism
Assignee: MD Knowlton Co
•
Filing: 1930-08-22
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Granted: 1933-08-01
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Expires: 1950-08-22
Abstract
No abstract record available.
Inventors
- 👤 Edgar M Hawkins
- 👤 Otto M Hoch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:40
CPC Classifications
B; B26; B26D; B26D5/00; B26D5/38; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4653; Y10T83/4656; Y10T83/4659; Y10T83/4676; Y10T83/4757; Y10T83/4763; Y10T83/4766; Y10T83/4795; Y10T83/4809; Y10T83/525; Y10T83/527; Y10T83/528
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) | 1936-07-31 | 1937-01-30 | 1937-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-07-31 | 1941-01-30 | 1941-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-07-31 | 1945-01-30 | 1945-08-01 | $7700.00 | Window Closed / Lapsed |