US2848843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric lamp sealing apparatus
Assignee: General Electric Co
•
Filing: 1956-03-01
•
Granted: 1958-08-26
•
Expires: 1976-03-01
Abstract
No abstract record available.
Inventors
- 👤 Waldemar P Schoenoff
- 👤 Vargo Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:10
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)
US1832080A
Cited
US2121627A
Cited
US2237186A
Cited
US2273445A
Cited
US2334123A
Cited
US2547275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |