US3393479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expandable shelter with inflated walls and ceiling
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1966-10-10
•
Granted: 1968-07-23
•
Expires: 1986-10-10
Abstract
No abstract record available.
Inventors
- 👤 Slotnick David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:53
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/20; E04H2015/202; E04H2015/204
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2640721A
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US2531678A
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US2713689A
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US2659110A
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US2819724A
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US2890907A
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US2895490A
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US3059655A
Cited
US3065019A
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US3161553A
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US3006353A
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US3102546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |