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US2434736A
Expired / Lapsed
US
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Apparatus for surfacing sheet material
Assignee: Certainteed LLC
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Filing: 1944-06-22
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Granted: 1948-01-20
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Expires: 1964-06-22
Abstract
No abstract record available.
Inventors
- 👤 Eldon O Dryer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:03
CPC Classifications
D; D21; D21J; D21J1/00; D21J1/16; D21J1/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1584557A
Cited
US2074445A
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US2074131A
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US2074130A
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US2074147A
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US2211435A
Cited
US2183412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-19 | 1951-07-21 | 1952-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-19 | 1955-07-21 | 1956-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-19 | 1959-07-21 | 1960-01-20 | $7700.00 | Window Closed / Lapsed |