Patent US2901800A successfully refreshed from Google Patents.
US2901800A
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US
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Self coring grommet
Assignee: C E M Co
•
Filing: 1953-09-10
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Granted: 1959-09-01
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Expires: 1973-09-10
Abstract
No abstract record available.
Inventors
- 👤 Koehl Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:41
CPC Classifications
F; F16; F16B; F16B19/00; F16B19/04; F16B19/08; F16B19/10; Y; Y10; Y10T; Y10T24/00; Y10T24/37; Y10T24/3742; Y10T24/3745
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US84900A
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US304249A
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US395478A
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US496357A
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US626722A
Cited
US1467280A
Cited
US1887466A
Cited
US2562005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |