Patent US3490846A successfully refreshed from Google Patents.
US3490846A
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US
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Optical alignment and exposure apparatus
Assignee: Kasper Instruments Inc
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Filing: 1967-06-01
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Granted: 1970-01-20
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Expires: 1987-06-01
Abstract
No abstract record available.
Inventors
- 👤 Goetz H Kasper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:45
CPC Classifications
G; G03; G03F; G03F9/00; G03F9/70; H; H10; H10P; H10P72/00; H10P72/50; H10P72/57; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/5313; Y10T29/53261
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |