Patent US2551402A successfully refreshed from Google Patents.
US2551402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for assembling and sealing glass and metal parts
Assignee: AT&T Inc
•
Filing: 1946-09-26
•
Granted: 1951-05-01
•
Expires: 1966-09-26
Abstract
No abstract record available.
Inventors
- 👤 Ralph A Vinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:54
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
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US195994A
Cited
US1953492A
Cited
US1779311A
Cited
US1991062A
Cited
US2125316A
Cited
US2252517A
Cited
US2347421A
Cited
US2415867A
Cited
US2480364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |