US2885997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum coating
Assignee: WC Heraus GmbH and Co KG
•
Filing: 1956-02-06
•
Granted: 1959-05-12
•
Expires: 1976-02-06
Abstract
No abstract record available.
Inventors
- 👤 Schwindt Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:55
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/50; C23C14/505
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1551850A
Cited
US2322613A
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US2241228A
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US2339613A
Cited
US2354521A
Cited
US2469929A
Cited
US2610606A
Cited
US2540623A
Cited
US2768098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |