US3146138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum evaporated barrier for a cds crystal
Assignee: Individual
•
Filing: 1961-07-10
•
Granted: 1964-08-25
•
Expires: 1981-07-10
Abstract
No abstract record available.
Inventors
- 👤 Fred A Shirland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:12
CPC Classifications
H; H10; H10F; H10F10/00; H10F10/10; H10F10/16; H10F10/169; C; C25; C25D; C25D3/00; C25D3/02; C25D3/38; H10P; H10P95/00; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y10; Y10S; Y10S148/00; Y10S148/064; Y10S148/12; Y10S148/139
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2743430A
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US2742376A
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US2810052A
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US2916678A
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US2820841A
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US2844640A
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US3009841A
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US3062750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |