Patent US2997048A successfully refreshed from Google Patents.
US2997048A
Expired / Lapsed
US
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Cleaning device for grocery carts
Assignee: Individual
•
Filing: 1958-09-29
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Granted: 1961-08-22
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Expires: 1978-09-29
Abstract
No abstract record available.
Inventors
- 👤 Frank J Gertken
- 👤 John B Gertken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:41
CPC Classifications
B; B60; B60S; B60S3/00; B60S3/004; B08; B08B; B08B3/00; B08B3/02; B08B2230/00; B08B2230/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |