Patent US2500690A successfully refreshed from Google Patents.
US2500690A
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US
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Apparatus for making fibrous products
Assignee: Owens Corning
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Filing: 1945-11-21
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Granted: 1950-03-14
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Expires: 1965-11-21
Abstract
No abstract record available.
Inventors
- 👤 George M Lannan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:09
CPC Classifications
B; B29; B29C; B29C67/00; B29C67/24; B29C67/248; B29C67/249; B28; B28B; B28B1/00; B28B1/52; B29C70/00; B29C70/04; B29C70/28; B29C70/30; B29C70/38; B29C70/40; B29C70/50; B29C70/504; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B2001/7683; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1015
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |