US3484740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Producing acoustic holograms
Assignee: Shell USA Inc
•
Filing: 1967-12-07
•
Granted: 1969-12-16
•
Expires: 1987-12-07
Abstract
No abstract record available.
Inventors
- 👤 Samuel P Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:47
CPC Classifications
G; G06; G06E; G06E3/00; G06E3/001; G01; G01N; G01N29/00; G01N29/04; G01N29/06; G01N29/0609; G01N29/0654; G01N29/0663; G01V; G01V1/00; G01V1/003; G01V1/28; G01V1/34; Y; Y10; Y10S; Y10S359/00; Y10S359/90; Y10S359/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3292143A
Cited
US3400363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |