US3404034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of metal-coated powders and cathode structures
Assignee: AT&T Inc
•
Filing: 1967-11-15
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Granted: 1968-10-01
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Expires: 1987-11-15
Abstract
No abstract record available.
Inventors
- 👤 Dean W Maurer
- 👤 Charles M Pleass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:21
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/13; H01J1/20; H01J1/28; C; C23; C23C; C23C16/00; C23C16/44; C23C16/442; H01J1/14; H01J9/00; H01J9/02; H01J9/04; H01J9/042; B; B22; B22F; B22F2998/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2698810A
Cited
US2798051A
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US2912611A
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US2839423A
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US2874077A
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US2985509A
Cited
US3155864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |