Patent US3021987A successfully refreshed from Google Patents.
US3021987A
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Assignee: National Can Corp
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Filing: 1958-01-08
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Granted: 1962-02-20
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Expires: 1978-01-08
Abstract
No abstract record available.
Inventors
- 👤 Arthur P Scholtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:30
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/67; B65D85/671; B65D85/672; B65D83/00; B65D83/08; B65D83/0805; B65D83/0811; B65D83/0841; B65H; B65H35/00; B65H35/0006; B65H35/002; B65H35/0026; Y; Y10; Y10T; Y10T225/00; Y10T225/20; Y10T225/222; Y10T225/238; Y10T225/244
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2704640A
Cited
CA538261A
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GB431174A
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US2476593A
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US2547569A
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US2608295A
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US2582422A
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US2612322A
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US2681186A
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GB746924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |