US2928528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire-drawing die
Assignee: Steel Company of Canada Ltd
•
Filing: 1954-06-02
•
Granted: 1960-03-15
•
Expires: 1974-06-02
Abstract
No abstract record available.
Inventors
- 👤 Roy M Kelday
- 👤 Frederick L Hayden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:15
CPC Classifications
B; B21; B21C; B21C3/00; B21C3/02; B21C3/04; B21C3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US92551A
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US404982A
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US416484A
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US946631A
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US1343885A
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US1394716A
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US1418186A
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US1559734A
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US1933433A
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US2241902A
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US2601385A
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US2600534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |