US3046936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in vacuum coating apparatus comprising an ion trap for the electron gun thereof
Assignee: National Research Corp
•
Filing: 1958-06-04
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Granted: 1962-07-31
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Expires: 1978-06-04
Abstract
No abstract record available.
Inventors
- 👤 Jr John C Simons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:08
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/28; C23C14/30; H; H01; H01J; H01J37/00; H01J37/30; H01J37/3002; H01J37/3007; H01J37/305; H01J37/3053; Y; Y10; Y10S; Y10S164/00; Y10S164/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2146025A
Cited
US2239642A
Cited
US2423729A
Cited
US2727171A
Cited
GB754102A
Cited
US2932588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |