US3412196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron beam vacuum melting furnace
Assignee: Lockheed Martin Corp
•
Filing: 1966-07-13
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Granted: 1968-11-19
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Expires: 1986-07-13
Abstract
No abstract record available.
Inventors
- 👤 William D Figgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:09
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/04; H01J37/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US848600A
Cited
US2793282A
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US2899556A
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US3192318A
Cited
US3202794A
Cited
US3311746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |