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US2504744A
Expired / Lapsed
US
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Glass fiber sheet material
Assignee: General Electric Co
•
Filing: 1944-06-03
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Granted: 1950-04-18
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Expires: 1964-06-03
Abstract
No abstract record available.
Inventors
- 👤 Reavis C Sproull
- 👤 Philip L Staats
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:47
CPC Classifications
D; D21; D21H; D21H13/00; D21H13/36; D21H13/38; D21H13/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190801922A
Cited
US2072465A
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US2108761A
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US2227637A
Cited
GB497059A
Cited
US2217005A
Cited
US2327991A
Cited
US2322214A
Cited
US2389678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-17 | 1953-10-17 | 1954-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-17 | 1957-10-17 | 1958-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-17 | 1961-10-17 | 1962-04-18 | $7700.00 | Window Closed / Lapsed |