Patent US2512971A successfully refreshed from Google Patents.
US2512971A
Expired / Lapsed
US
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Method of fusing together glass parts
Assignee: Hartford National Bank and Trust Co
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Filing: 1947-12-10
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Granted: 1950-06-27
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Expires: 1967-12-10
Abstract
No abstract record available.
Inventors
- 👤 Roovers Wilhelmus Antonius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:51
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/20; H01J5/22; H01J5/24; H01J2893/00; H01J2893/0033; H01J2893/0037; H01J2893/0038; H01J2893/0039
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2006568A
Cited
US2034925A
Cited
US2006318A
Cited
US2151840A
Cited
US2215641A
Cited
US2296579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |