US3067351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aperture fluorescent lamp
Assignee: GTE Sylvania Inc
•
Filing: 1960-01-04
•
Granted: 1962-12-04
•
Expires: 1980-01-04
Abstract
No abstract record available.
Inventors
- 👤 Gungle Warren Calvin
- 👤 John F Waymouth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:17
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/02; C09K11/025; H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/302; H01J61/35; H01J61/38; H01J61/42
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
17 words
A FLUORESCENT LAMP COMPRISING AN ENVELOPE, A PHOSPHOR COATING ON A MAJOR PORTION ONLY OF SAID ENVELOPE,
References Cited (Backward Citations)
US2611383A
Cited
US2407379A
Cited
US2509071A
Cited
GB603326A
Cited
US2643020A
Cited
US2719932A
Cited
DE919835C
Cited
US2777091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |