Patent US2554909A successfully refreshed from Google Patents.
Patent US2373609A successfully refreshed from Google Patents.
US2373609A
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Refrigeration drive
Assignee: Hoover Co
•
Filing: 1943-10-21
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Granted: 1945-04-10
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Expires: 1963-10-21
Abstract
No abstract record available.
Inventors
- 👤 Maurice D Stahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:57
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/10; H02K49/104; H02K49/106; F; F25; F25B; F25B15/00; F25B15/10; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
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) | 1948-04-09 | 1948-10-09 | 1949-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-04-09 | 1952-10-09 | 1953-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-04-09 | 1956-10-09 | 1957-04-10 | $7700.00 | Window Closed / Lapsed |