US3389240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron beam welding apparatus
Assignee: Sciaky Brothers Inc
•
Filing: 1964-09-25
•
Granted: 1968-06-18
•
Expires: 1984-09-25
Abstract
No abstract record available.
Inventors
- 👤 Sciaky David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:07
CPC Classifications
B; B23; B23K; B23K15/00; B23K15/10; H; H01; H01J; H01J37/00; H01J37/02; H01J37/18; H01J37/30; H01J37/301
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2844706A
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US3162749A
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US3219792A
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US3171943A
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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) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |