US2994916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for melting glass and drawing filaments therefrom
Assignee: Johns Manville Fiber Glass Inc
•
Filing: 1958-03-28
•
Granted: 1961-08-08
•
Expires: 1978-03-28
Abstract
No abstract record available.
Inventors
- 👤 Norman E Mcfadden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:52
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/08; C03B37/081; C03B5/00; C03B5/06; C03B5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1874799A
Cited
US2080625A
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US2226498A
Cited
US2306462A
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US2455908A
Cited
US2814657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |