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Patent US2980956A successfully refreshed from Google Patents.
US2980956A
Expired / Lapsed
US
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Metal applicators for glass filaments
Assignee: Owens Corning
•
Filing: 1953-12-21
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Granted: 1961-04-25
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Expires: 1973-12-21
Abstract
No abstract record available.
Inventors
- 👤 Harry B Whitehurst
- 👤 William H Otto
- 👤 William P Warthen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:06
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/42; C03C25/46; Y; Y10; Y10S; Y10S118/00; Y10S118/18
Claims Analysis
Total Claims: 0
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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) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |