Patent US1743837A successfully refreshed from Google Patents.
US3449092A
Expired / Lapsed
US
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Superconducting material
Assignee: Gulf General Atomic Inc
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Filing: 1966-01-28
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Granted: 1969-06-10
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Expires: 1986-01-28
Abstract
No abstract record available.
Inventors
- 👤 Robert H Hammond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:43
CPC Classifications
C; C22; C22C; C22C47/00; H; H10; H10N; H10N60/00; H10N60/01; H10N60/0128; H10N60/20; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9265; Y10S428/93; Y10S428/931; Y10S505/00; Y10S505/80; Y10S505/812; Y10S505/813; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12632; Y10T428/12708; Y10T428/12771; Y10T428/12806; Y10T428/12819
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) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |