Patent US3415951A successfully refreshed from Google Patents.
US3415951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display apparatus utilizing partially reflecting adjustable mirror to superimpose two images
Assignee: Allard Way Holdings Ltd
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Filing: 1965-03-15
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Granted: 1968-12-10
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Expires: 1985-03-15
Abstract
No abstract record available.
Inventors
- 👤 Fritz P Heller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:15
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/01; G02B27/0149; G03; G03B; G03B41/00; G03B41/02; G03B41/04; H; H04; H04N; H04N3/00; H04N3/02; H04N3/06; G02B2027/0154; G02B27/0179; G02B2027/0187
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3274545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |