US3472705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabrication of niobium superconductor alloys
Assignee: Airco Inc
•
Filing: 1967-04-07
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Granted: 1969-10-14
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Expires: 1987-04-07
Abstract
No abstract record available.
Inventors
- 👤 Eric Gregory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:50
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/04; C22C1/045; B; B22; B22F; B22F9/00; B22F9/02; B22F9/023; H; H10; H10N; H10N60/00; H10N60/01; H10N60/0156; Y; Y10; Y10S; Y10S505/00; Y10S505/80; Y10S505/815; Y10S505/823; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014
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) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |