US3528743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser densitometer
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1964-06-29
•
Granted: 1970-09-15
•
Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Robert Emmett Scott
- 👤 Edwin Nathaniel Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:40
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/49; G01N21/53; G01N21/538
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1810739A
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US2403631A
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US2684008A
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US2873644A
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US2877453A
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US2990339A
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US3094625A
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US3146293A
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US3150264A
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US3231748A
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US3312826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |