US3448322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct filament enclosed incandescent lamps and contact means therefor
Assignee: General Electric Co
•
Filing: 1966-12-15
•
Granted: 1969-06-03
•
Expires: 1986-12-15
Abstract
No abstract record available.
Inventors
- 👤 Roger C Millikan
- 👤 Ludwig A Osburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:59
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/38; H01J; H01J5/00; H01J5/20; H01J5/22; H01J5/24; H01J2893/00; H01J2893/0033; H01J2893/0037; H01J2893/0038; H01J2893/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1531265A
Cited
US2009094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |