Patent US2141202A successfully refreshed from Google Patents.
US2467889A
Expired / Lapsed
US
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Mineral wool
Assignee: Babcock and Wilcox Co
•
Filing: 1944-12-19
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Granted: 1949-04-19
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Expires: 1964-12-19
Abstract
No abstract record available.
Inventors
- 👤 Harter Isaac
- 👤 Jr Charles L Norton
- 👤 Jr Leonard D Christie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:30
CPC Classifications
C; C03; C03C; C03C13/00; C03C13/06; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US906173A
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US906339A
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US1589803A
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US1521577A
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US1944856A
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US2021221A
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US2063219A
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US2215887A
Cited
US2202090A
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US2300930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |