US3373308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Negative electrodes for carbon arc lamps
Assignee: Mersen SA
•
Filing: 1966-07-05
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Granted: 1968-03-12
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Expires: 1986-07-05
Abstract
No abstract record available.
Inventors
- 👤 Perrin Jean Adrien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:28
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B7/14; H05B31/00; H05B31/02; H05B31/06; H05B31/08; H05B31/10; F; F16; F16B; F16B2200/00; F16B2200/10; Y; Y02; Y02P; Y02P10/00; Y02P10/25; Y10; Y10S; Y10S403/00; Y10S403/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US863674A
Cited
US1253572A
Cited
US2024445A
Cited
US2693498A
Cited
US3030544A
Cited
US3131290A
Cited
FR1383904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |