Patent US3452178A successfully refreshed from Google Patents.
US3452178A
Expired / Lapsed
US
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Apparatus for spot-heating of workpieces by laser radiation
Assignee: Siemens AG
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Filing: 1964-06-12
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Granted: 1969-06-24
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Expires: 1984-06-12
Abstract
No abstract record available.
Inventors
- 👤 Werner Kleen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:04
CPC Classifications
G; G08; G08B; G08B25/00; G08B25/01; G08B25/04; G08B25/045; H; H01; H01J; H01J17/00; H01J17/02; H01J17/14; B; B23; B23K; B23K26/00; B23K26/16; H01S; H01S3/00; H01S3/005; Y; Y10; Y10S; Y10S65/00; Y10S65/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |