Patent US3383492A successfully refreshed from Google Patents.
US3383492A
Expired / Lapsed
US
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Optical viewing system for electron beam welders
Assignee: Sciaky Brothers Inc
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Filing: 1964-06-23
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Granted: 1968-05-14
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Expires: 1984-06-23
Abstract
No abstract record available.
Inventors
- 👤 Julius L Solomon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:48
CPC Classifications
B; B23; B23K; B23K15/00; B23K15/0013; H; H01; H01J; H01J37/00; H01J37/30; H01J37/3002; H01J37/3005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3020389A
Cited
US3112391A
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US3291959A
Cited
US3156809A
Cited
US3169183A
Cited
US3156810A
Cited
US3275795A
Cited
US3300618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |