US3011470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure change indicator
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1960-03-18
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Granted: 1961-12-05
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Expires: 1980-03-18
Abstract
No abstract record available.
Inventors
- 👤 William F Stoermer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:16
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/42; B01D46/44; B01D46/446; B01D35/00; B01D35/14; B01D35/143; B01D35/147; B01D46/0084; B01D46/0086; B01D46/4254; G; G01; G01L; G01L7/00; G01L7/16; Y; Y10; Y10S; Y10S116/00; Y10S116/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2669707A
Cited
US2935040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |