US2633427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing a light slit
Assignee: RCA Corp
•
Filing: 1947-04-22
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Granted: 1953-03-31
•
Expires: 1967-04-22
Abstract
No abstract record available.
Inventors
- 👤 Glenn L Dimmick
- 👤 Mary E Widdop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:32
CPC Classifications
G; G11; G11B; G11B7/00; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
THE METHOD OF PRODUCING A LIGHT TRANSMITTING APERTURE COMPRISING EVAPORATING A METAL OF LOW ELECTRICAL RESISTANCE AND AN INSULATING MATERIAL OF HIGH ELECTRICAL RESISTANCE IN A VACUUM, DIRECTING SAID EVAPORATED MATERIALS TO THE SURFACE OF A TRANSPARENT MEDIUM, COVERING SAID MEDIUM WITH A NARROW UNIFORMLY PARALLEL SIDED SHIELD, DEPOSITING SAID EVAPORATED MATERIAL OVER SAID MEDIUM AND SAID SHIELD, SAID DEPOSITING BEING
Claim 2
Independent Claim
61 words
THE METHOD OF PRODUCING A LIGHT TRANSMITTING APERTURE COMPRISING EVAPORATING A METAL OF LOW ELECTRICAL RESISTANCE AND AN INSULATING MATERIAL OF HIGH ELECTRICAL RESISTANCE IN A VACUUM, DIRECTING SAID EVAPORATED MATERIALS TO THE SURFACE OF A TRANSPARENT MEDIUM, COVERING SAID MEDIUM WITH A NARROW UNIFORMLY PARALLEL SIDED SHIELD, DEPOSITING SAID EVAPORATED MATERIAL OVER SAID MEDIUM AND SAID SHIELD, SAID DEPOSITING BEING
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |