Patent US2545981A successfully refreshed from Google Patents.
US2545981A
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Reinforced plastic sheet
Assignee: Flex-O-Glass Inc
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Filing: 1945-12-03
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Granted: 1951-03-20
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Expires: 1965-12-03
Abstract
No abstract record available.
Inventors
- 👤 Warp Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:45
CPC Classifications
B; B32; B32B; B32B27/00; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/08; Y; Y10; Y10S; Y10S116/00; Y10S116/14; Y10S160/00; Y10S160/07; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24479; Y10T428/2457; Y10T428/26; Y10T428/268
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US720138A
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US1580287A
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US1706524A
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US1932821A
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US1933616A
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US2033204A
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US2046886A
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US2304886A
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US2330282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |