Patent US2850768A successfully refreshed from Google Patents.
US2850768A
Expired / Lapsed
US
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Collapsible curing rim
Assignee: Individual
•
Filing: 1953-09-17
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Granted: 1958-09-09
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Expires: 1973-09-17
Abstract
No abstract record available.
Inventors
- 👤 Malcolm C Elrick
- 👤 Marcus B Champlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:43
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/52; B29D30/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US497464A
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US1320199A
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US812148A
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US1368862A
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US1788428A
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US1938437A
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US2152765A
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US2372246A
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US2561573A
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US2724861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |