US2949633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus used in the production of glass fibers
Assignee: LOF GLASS FIBERS CO
•
Filing: 1956-12-31
•
Granted: 1960-08-23
•
Expires: 1976-12-31
Abstract
No abstract record available.
Inventors
- 👤 Drummond Warren Wendell
- 👤 William B Hullhorst
- 👤 Jesse H Plummer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:52
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/08; C03B37/083; C03B37/01; C03B37/02; C03B37/0203; C03B37/0209
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE449233C
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GB436250A
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US2121802A
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US2165318A
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US2215982A
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US2489508A
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US2535888A
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USRE24060E
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GB724404A
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US2775850A
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US2706365A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |