US3418512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerative cycle electric incandescent lamp
Assignee: US Philips Corp
•
Filing: 1965-06-30
•
Granted: 1968-12-24
•
Expires: 1985-06-30
Abstract
No abstract record available.
Inventors
- 👤 T Jampens Germain Remi
- 👤 Meije Riksterus Auguste Maria
- 👤 Martinus Henricus Adrianu Weij
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:15
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/50; H01K1/28; H01K1/34; H01K1/52; H01K1/54; Y; Y02; Y02B; Y02B20/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |