US3421268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expandable portable shelter
Assignee: United States Department of the Air Force
•
Filing: 1967-01-20
•
Granted: 1969-01-14
•
Expires: 1987-01-20
Abstract
No abstract record available.
Inventors
- 👤 Alex J Reynolds
- 👤 Rinaldo A Lo Russo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:59
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/343; E04B1/344; E04B1/3442
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US954305A
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US1156693A
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US1498173A
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US2006477A
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US2602406A
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FR1010403A
Cited
US2755517A
Cited
US2768023A
Cited
US2920920A
Cited
US3097013A
Cited
US3119638A
Cited
US3257760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |