Patent US2756519A successfully refreshed from Google Patents.
US2756519A
Expired / Lapsed
US
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Box toe for safety shoes
Assignee: HILL BROS CO
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Filing: 1955-03-11
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Granted: 1956-07-31
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Expires: 1975-03-11
Abstract
No abstract record available.
Inventors
- 👤 Lawson T Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:14
CPC Classifications
A; A43; A43B; A43B23/00; A43B23/08; A43B23/081; A43B23/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB236998A
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US1826645A
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US1952758A
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US1970157A
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US2328601A
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US2537891A
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US2578987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |