US2720150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning mixing unit
Assignee: BUENSOD STACEY Inc
•
Filing: 1952-11-06
•
Granted: 1955-10-11
•
Expires: 1972-11-06
Abstract
No abstract record available.
Inventors
- 👤 Samuel E Lyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:02
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/044; F24F3/048; F24F3/052; F24F3/0522; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86815; Y10T137/86879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US76717A
Cited
US194782A
Cited
GB649447A
Cited
US1782758A
Cited
GB632014A
Cited
US2539148A
Cited
US2620983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |