US3423295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gold plating
Assignee: Engelhard Industries Inc
•
Filing: 1966-02-23
•
Granted: 1969-01-21
•
Expires: 1986-02-23
Abstract
No abstract record available.
Inventors
- 👤 Lawrence Greenspan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:56
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US744170A
Cited
US823864A
Cited
FR1027637A
Cited
US3149057A
Cited
CH354643A
Cited
US2967135A
Cited
GB928088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |