US2456795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode sputtering apparatus for coating oscillator plates
Assignee: REEVES HOFFMAN Corp
•
Filing: 1945-10-06
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Granted: 1948-12-21
•
Expires: 1965-10-06
Abstract
No abstract record available.
Inventors
- 👤 Wallace H E Samuelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:42
CPC Classifications
H; H03; H03H; H03H3/00; H03H3/007; H03H3/02; C; C23; C23C; C23C14/00; C23C14/22; C23C14/34; C23C14/35
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1099934A
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US1765413A
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US1917271A
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US2066611A
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US2239642A
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US2343059A
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US2352283A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |