Patent US6255668B1 successfully refreshed from Google Patents.
Patent US1597820A successfully refreshed from Google Patents.
US1597820A
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Assignee: Commercial Shearing Inc
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Filing: 1925-03-31
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Granted: 1926-08-31
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Expires: 1945-03-31
Abstract
No abstract record available.
Inventors
- 👤 Robert V Proctor
- 👤 Harry M Schaab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:01
CPC Classifications
B; B65; B65D; B65D19/00; B65D19/0004; B65D19/0006; B65D19/003; B65D19/0042; B65D19/0046; B65D19/0051; B65D2519/00; B65D2519/00004; B65D2519/00009; B65D2519/00014; B65D2519/00024; B65D2519/00049; B65D2519/00059; B65D2519/00258; B65D2519/00263; B65D2519/00273; B65D2519/00283; B65D2519/00288; B65D2519/00293; B65D2519/00308; B65D2519/00313; B65D2519/00323; B65D2519/00328; B65D2519/00333; B65D2519/00338; B65D2519/00368; B65D2519/00373; B65D2519/00547; B65D2519/00552; B65D2519/00557; B65D2519/00562; B65D2519/00572
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) | 1929-08-30 | 1930-03-01 | 1930-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-08-30 | 1934-03-01 | 1934-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-08-30 | 1938-03-01 | 1938-08-31 | $7700.00 | Window Closed / Lapsed |