US3540878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallic surface treatment material
Assignee: General Electric Co
•
Filing: 1967-12-14
•
Granted: 1970-11-17
•
Expires: 1987-12-14
Abstract
No abstract record available.
Inventors
- 👤 David J Levine
- 👤 Moses A Levinstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:38
CPC Classifications
C; C23; C23C; C23C12/00; C23C12/02; C22; C22C; C22C14/00; C22C16/00; C23C10/00; C23C10/28; C23C10/34; C23C10/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3203794A
Cited
US3052538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |