Patent US2845889A successfully refreshed from Google Patents.
US2845889A
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US
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Method of forming a flow conduit
Assignee: Coleman Co Inc
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Filing: 1953-08-25
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Granted: 1958-08-05
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Expires: 1973-08-25
Abstract
No abstract record available.
Inventors
- 👤 Tillman F Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:56
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/10; B21C37/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US137991A
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US1728169A
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US1571412A
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US1681880A
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US2086143A
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US2170639A
Cited
US2221208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |