US2643104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerating device
Assignee: MARGURITE H HOLDEN
•
Filing: 1949-12-19
•
Granted: 1953-06-23
•
Expires: 1969-12-19
Abstract
No abstract record available.
Inventors
- 👤 Orloff W Holden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:21
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/08; E03C1/084; B; B67; B67D; B67D1/00; B67D1/08; B67D1/12; B67D1/14; B67D1/1405; B67D1/1411; Y; Y10; Y10S; Y10S261/00; Y10S261/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1890156A
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US1968716A
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US2316832A
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US2103425A
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US2305796A
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US2210840A
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US2211106A
Cited
US2327306A
Cited
CH219084A
Cited
US2541854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |