US2712772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-regulating automatic heliostat reflecting mirror device
Assignee: CEUTRE NAT de la RECH SCIENT
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Filing: 1953-07-24
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Granted: 1955-07-12
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Expires: 1973-07-24
Abstract
No abstract record available.
Inventors
- 👤 Trombe Felix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:02
CPC Classifications
F; F21; F21S; F21S11/00; F24; F24S; F24S30/00; F24S30/40; F24S30/45; F24S50/00; F24S50/20; F24S2030/10; F24S2030/11; F24S2030/115; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/47
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) | 1958-07-11 | 1959-01-10 | 1959-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-11 | 1963-01-10 | 1963-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-11 | 1967-01-10 | 1967-07-12 | $7700.00 | Window Closed / Lapsed |