US3156539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superconductive materials
Assignee: General Electric Co
•
Filing: 1962-03-27
•
Granted: 1964-11-10
•
Expires: 1982-03-27
Abstract
No abstract record available.
Inventors
- 👤 Harry N Treaftis
- 👤 Jr Charles E Watts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:01
CPC Classifications
C; C22; C22C; C22C7/00; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/26; H; H10; H10N; H10N60/00; H10N60/80; H10N60/85; Y; Y10; Y10S; Y10S420/00; Y10S420/901; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S505/00; Y10S505/80; Y10S505/801; Y10S505/805; Y10S505/812; Y10S505/825; Y10S505/856; Y10S505/857; Y10S505/872; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12785; Y10T428/12986
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2281991A
Cited
US2767287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |