US2621797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Maytag Corp
•
Filing: 1947-12-13
•
Granted: 1952-12-16
•
Expires: 1967-12-13
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:42
CPC Classifications
D; D06; D06F; D06F39/00; D06F39/10; B; B01; B01D; B01D29/00; B01D29/01; B01D29/62; B01D29/66; B01D29/70; B01D29/72; B01D35/00; B01D35/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189700233A
Cited
US687979A
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US1108079A
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US1497921A
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US1521989A
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US1874475A
Cited
US2298096A
Cited
US2430078A
Cited
US2468354A
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US2439535A
Cited
US2449634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |