US2532268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-conditioned elevator
Assignee: KROESCHELL ENGINEERING Co
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Filing: 1947-11-10
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Granted: 1950-11-28
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Expires: 1967-11-10
Abstract
No abstract record available.
Inventors
- 👤 William F Christmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:47
CPC Classifications
B; B66; B66B; B66B11/00; B66B11/02; B66B11/0226; B66B11/024; F; F24; F24F; F24F1/00; F24F1/02; F24F1/0358
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |