Patent US3384773A successfully refreshed from Google Patents.
US3384773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric incandescent lamp with levitating incandescent body
Assignee: US Philips Corp
•
Filing: 1965-03-04
•
Granted: 1968-05-21
•
Expires: 1985-03-04
Abstract
No abstract record available.
Inventors
- 👤 Kauer Erhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:05
CPC Classifications
H; H01; H01K; H01K11/00; H01K13/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2171359A
Cited
US2686864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |