Patent US3079503A successfully refreshed from Google Patents.
US3079503A
Expired / Lapsed
US
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Negative to positive microscope
Assignee: Optomechanisms Inc
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Filing: 1962-03-29
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Granted: 1963-02-26
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Expires: 1982-03-29
Abstract
No abstract record available.
Inventors
- 👤 Anwar K Chitayat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:02
CPC Classifications
G; G02; G02B; G02B21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US745584A
Cited
US2549860A
Cited
GB509308A
Cited
US2522493A
Cited
US2642538A
Cited
US2996617A
Cited
US3028492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |