US2352930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning
Assignee: Servel Inc
•
Filing: 1941-12-09
•
Granted: 1944-07-04
•
Expires: 1961-12-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Philip P Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:47
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/044; F25; F25B; F25B49/00; F25B49/04; F25B49/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-07-04 | 1948-01-03 | 1948-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-07-04 | 1952-01-03 | 1952-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-07-04 | 1956-01-03 | 1956-07-04 | $7700.00 | Window Closed / Lapsed |