Patent US2427448A successfully refreshed from Google Patents.
US2427448A
Expired / Lapsed
US
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Apparatus for producing vitreous or metallic surfaces
Assignee: Individual
•
Filing: 1942-12-23
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Granted: 1947-09-16
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Expires: 1962-12-23
Abstract
No abstract record available.
Inventors
- 👤 Duccini Gaetano
- 👤 Primo R Caredio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:45
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/14; B05B7/1404; B05B7/1472; B05B7/16; B05B7/1606; B05B7/1613; B05B7/162; B05B7/20; B05B7/201; B05B7/205; B05B7/208; B28; B28B; B28B11/00; B28B11/04; C; C03; C03C; C03C17/00; C03C17/06; C23; C23C; C23C4/00; C23C4/12; C23C4/129; C23D; C23D5/00; C03C2217/00; C03C2217/20; C03C2217/25; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/112; C03C2218/13
Claims Analysis
Total Claims: 0
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US1669084A
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US2108998A
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US2058218A
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US2137442A
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US2317173A
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US2303458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-15 | 1951-03-17 | 1951-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-15 | 1955-03-17 | 1955-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-15 | 1959-03-17 | 1959-09-16 | $7700.00 | Window Closed / Lapsed |