US2355495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating and air conditioning system
Assignee: Individual
•
Filing: 1942-06-11
•
Granted: 1944-08-08
•
Expires: 1962-06-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward M Zier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:44
CPC Classifications
F; F24; F24F; F24F5/00; F24F5/0046; F24F5/005; Y; Y02; Y02B; Y02B10/00; Y02B10/40; Y02B30/00; Y02B30/54
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) | 1947-08-08 | 1948-02-07 | 1948-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-08-08 | 1952-02-07 | 1952-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-08-08 | 1956-02-07 | 1956-08-08 | $7700.00 | Window Closed / Lapsed |