US2844706A
Expired / Lapsed
US
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Method of producing minute perforations in solid bodies by thermal impact exerted byconcentrated corpuscular rays
Assignee: Engelhard Industries Inc
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Filing: 1954-08-19
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Granted: 1958-07-22
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Expires: 1974-08-19
Abstract
No abstract record available.
Inventors
- 👤 Lorenz Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:28
CPC Classifications
D; D01; D01D; D01D4/00; D01D4/02; D01D4/022; B; B23; B23K; B23K15/00; B23K15/08; B23K15/085; H; H01; H01J; H01J37/00; H01J37/02; H01J37/244; H01J37/30; H01J37/304; H01J37/31; H01J2237/00; H01J2237/245; H01J2237/24507; Y; Y10; Y10S; Y10S164/00; Y10S164/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2079446A
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US2128581A
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US2188679A
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US2267752A
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US2659828A
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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) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |