US3456715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the measurement of levels of high temperature materials
Assignee: General Dynamics Corp
•
Filing: 1966-08-16
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Granted: 1969-07-22
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Expires: 1986-08-16
Abstract
No abstract record available.
Inventors
- 👤 Robert P Freedman
- 👤 Martin J Fetner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:31
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/16; B22D11/18; B22D11/181; B22D11/186; G; G01; G01F; G01F23/00; G01F23/22; G01F23/28; G01F23/296; G01F23/2961; G01F23/2965
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2763040A
Cited
US2905989A
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US3237251A
Cited
GB965167A
Cited
US3204460A
Cited
US3255626A
Cited
US3300820A
Cited
US3326042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |