US2564604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Erasing device
Assignee: BLUE ROBIN Corp
•
Filing: 1946-11-15
•
Granted: 1951-08-14
•
Expires: 1966-11-15
Abstract
No abstract record available.
Inventors
- 👤 Jenny Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:46
CPC Classifications
B; B43; B43L; B43L19/00; B43L19/0006; B43L19/0012; Y; Y10; Y10T; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8588; Y10T408/85892
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US402710A
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DE554832C
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GB189524507A
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US834783A
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US933299A
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US1038525A
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US1281223A
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US1355026A
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US1424221A
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FR759168A
Cited
US2123877A
Cited
CH237799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |