US2881495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: C E M Co
•
Filing: 1954-04-30
•
Granted: 1959-04-14
•
Expires: 1974-04-30
Abstract
No abstract record available.
Inventors
- 👤 Koehl Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:25
CPC Classifications
A; A44; A44B; A44B1/00; A44B1/08; A44B1/12; A44B1/123; Y; Y10; Y10T; Y10T24/00; Y10T24/36; Y10T24/367
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE296164C
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CH62334A
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GB468004A
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DE883360C
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FR943829A
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FR981125A
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US2662259A
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US2640238A
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FR1057647A
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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) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |