US3454740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and device for welding by electron bombardment
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1967-04-06
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Granted: 1969-07-08
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Expires: 1987-04-06
Abstract
No abstract record available.
Inventors
- 👤 Henri Foulquier
- 👤 Rene Roudier
- 👤 Paul Thome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:18
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/30; H01J37/3002; H01J37/3005; B; B23; B23K; B23K15/00; B23K15/04; H01J37/02; H01J37/16; H01J37/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2420139A
Cited
US2651329A
Cited
US3136883A
Cited
US3301993A
Cited
US3219792A
Cited
US3260539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |