US3500827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable environmental control system
Assignee: National Aeronautics and Space Administration
•
Filing: 1969-01-16
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Granted: 1970-03-17
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Expires: 1989-01-16
Abstract
No abstract record available.
Inventors
- 👤 William J O'reilly
- 👤 Donald A Myers
- 👤 Paul D Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:30
CPC Classifications
A; A61; A61G; A61G10/00; A61G10/02; A61G10/023; A62; A62B; A62B7/00; A62B7/08; B; B64; B64G; B64G1/00; B64G1/22; B64G1/46; B64G1/48; B64G6/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2693088A
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US3174300A
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US3117426A
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US3161192A
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US3190287A
Cited
US3227208A
Cited
US3345641A
Cited
US3279201A
Cited
US3212286A
Cited
US3343536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |