US2940289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaper rinsing device
Assignee: Individual
•
Filing: 1957-06-06
•
Granted: 1960-06-14
•
Expires: 1977-06-06
Abstract
No abstract record available.
Inventors
- 👤 Donald J Hellwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:57
CPC Classifications
D; D06; D06F; D06F41/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US197053A
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US802264A
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US963786A
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US938961A
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US944071A
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US1605138A
Cited
US1758633A
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US1860594A
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US2181520A
Cited
US2456364A
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US2579536A
Cited
US2690927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |