US3478817A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Environmental space conditioning chamber
Assignee: Individual
•
Filing: 1966-04-18
•
Granted: 1969-11-18
•
Expires: 1986-04-18
Abstract
No abstract record available.
Inventors
- 👤 Allan Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:23
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2191208A
Cited
US2144693A
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US2218468A
Cited
US2300092A
Cited
US2544544A
Cited
US2941404A
Cited
US3181791A
Cited
US3257816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |