Patent US3501560A successfully refreshed from Google Patents.
US3501560A
Expired / Lapsed
US
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Method and apparatus for producing fibers from molten metals or ceramics
Assignee: IIT Research Institute
•
Filing: 1967-09-27
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Granted: 1970-03-17
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Expires: 1987-09-27
Abstract
No abstract record available.
Inventors
- 👤 Maurice A H Howes
- 👤 Harry Schwartzbart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:50
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/005; C; C03; C03B; C03B37/00; Y; Y10; Y10S; Y10S264/00; Y10S264/19
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) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |