US3146335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Focusing device for electron beams
Assignee: RTX Corp
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Filing: 1962-03-29
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Granted: 1964-08-25
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Expires: 1982-03-29
Abstract
No abstract record available.
Inventors
- 👤 Fred H Samuelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:21
CPC Classifications
B; B23; B23K; B23K15/00; B23K15/02; H; H01; H01J; H01J37/00; H01J37/02; H01J37/21; Y; Y10; Y10S; Y10S164/00; Y10S164/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
AN ELECTRON BEAM WELDING AND CUTTING MACHINE COMPRISING: MEANS FOR PRODUCING A BEAM OF ELECTRONS, MEANS FOR VARYING THE FOCUS OF SAID BEAM, MEANS FOR POSITIONING A WORK PIECE IN LINE WITH SAID BEAM,
Claim 2
Dependent Claim
34 words
AN ELECTRON BEAM WELDING AND CUTTING MACHINE COMPRISING: MEANS FOR PRODUCING A BEAM OF ELECTRONS, MEANS FOR VARYING THE FOCUS OF SAID BEAM, MEANS FOR POSITIONING A WORK PIECE IN LINE WITH SAID BEAM,
References Cited (Backward Citations)
DE1072763B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |