US2442871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor and receptacle therefor
Assignee: NAT STEAM CONSERVATION Co
•
Filing: 1946-09-16
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Granted: 1948-06-08
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Expires: 1966-09-16
Abstract
No abstract record available.
Inventors
- 👤 Friedrich Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:30
CPC Classifications
F; F24; F24D; F24D19/00; F24D19/10; F24D19/1003; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/1963; Y10T137/8593; Y10T137/86236; Y10T137/8626
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) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |