Patent US2989218A successfully refreshed from Google Patents.
US2989218A
Expired / Lapsed
US
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Reinforced drum body
Assignee: Continental Can Co Inc
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Filing: 1958-02-05
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Granted: 1961-06-20
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Expires: 1978-02-05
Abstract
No abstract record available.
Inventors
- 👤 Harold A Bergstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:08
CPC Classifications
B; B65; B65D; B65D15/00; B65D15/02; B65D15/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1439890A
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US2006548A
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US2218027A
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US2320764A
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US2696340A
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US2775384A
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US2854186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |