US2448499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing strands of intertwisted glass fibers
Assignee: Owens Corning
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Filing: 1944-03-10
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Granted: 1948-08-31
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Expires: 1964-03-10
Abstract
No abstract record available.
Inventors
- 👤 Carl C Swann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:28
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/02; D02G3/16; D02G3/18; B; B65; B65H; B65H54/00; B65H54/02; B65H54/28; B65H54/2896; C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/03; B65H2701/00; B65H2701/30; B65H2701/31; B65H2701/312; B65H2701/3122
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) | 1951-08-31 | 1952-03-01 | 1952-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-31 | 1956-03-01 | 1956-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-31 | 1960-03-01 | 1960-08-31 | $7700.00 | Window Closed / Lapsed |