US2508233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a gas-tight joint between a glass object and a metal object which have mutually different coefficients of expansion
Assignee: Hartford National Bank and Trust Co
•
Filing: 1946-05-02
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Granted: 1950-05-16
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Expires: 1966-05-02
Abstract
No abstract record available.
Inventors
- 👤 Dorgelo Eduard Gerardus
- 👤 Lemmens Hendricus Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:44
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/20; H01J5/22; H01J5/26; H01J2893/00; H01J2893/0033; H01J2893/0037; H01J2893/0041; H01J2893/0043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US230709A
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US673009A
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AT20948B
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US997489A
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US1695830A
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AT117132B
Cited
AT115092B
Cited
US1838781A
Cited
US2010145A
Cited
US2053765A
Cited
US2048556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |