Patent US3393032A successfully refreshed from Google Patents.
US3393032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosive-resistant and hermetically sealed controlled atmosphere microscope box andmicroscope
Assignee: United States Department of the Navy
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Filing: 1964-12-21
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Granted: 1968-07-16
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Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Crisler
- 👤 Jr Frederick E Brinckman
- 👤 Elizabeth A Whitman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:11
CPC Classifications
G; G21; G21F; G21F7/00; G21F7/04; G01; G01N; G01N21/00; G01N21/01
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) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |