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Patent US2838879A successfully refreshed from Google Patents.
US2838879A
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US
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Apparatus for drawing glass filaments
Assignee: Individual
•
Filing: 1955-05-12
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Granted: 1958-06-17
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Expires: 1975-05-12
Abstract
No abstract record available.
Inventors
- 👤 Schuller Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:46
CPC Classifications
B; B29; B29D; B29D29/00; C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/03; Y; Y10; Y10S; Y10S242/00; Y10S242/92
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) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |