US3737372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installation for surveying the displacement of a structure in a nuclear reactor
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1971-03-31
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Granted: 1973-06-05
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Expires: 1991-03-31
Abstract
Abstract This installation comprises a closed tube, one end of which contains a sighting gage and is supported by the structure to be surveyed whilst the other end of the tube which is closed by a viewing window is centered and maintained elastically within an opening of a stationary component. An observation tube is fixed in the opening of the stationary component and connects an object lens placed directly above the viewing window to an optical system.
Inventors
- 👤 P Debergh
- 👤 M Lagrange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:16
CPC Classifications
G; G21; G21C; G21C17/00; G21C17/10; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |