US3436258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming an insulated ground plane for a cryogenic device
Assignee: General Electric Co
•
Filing: 1965-12-30
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Granted: 1969-04-01
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Expires: 1985-12-30
Abstract
No abstract record available.
Inventors
- 👤 Constantine A Neugebauer
- 👤 John R Rairden
- 👤 Reuben E Joynson Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:59
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/14; C23C14/16; C23C14/58; C23C14/5846; C23C14/5853; H; H10; H10N; H10N60/00; H10N60/01; H10N60/0156; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/936; Y10S428/938; Y10S505/00; Y10S505/80; Y10S505/815; Y10S505/818; Y10S505/819; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014; Y10T428/00; Y10T428/12; Y10T428/12493; 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) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |