Patent US2819642A successfully refreshed from Google Patents.
US2819642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic cap having parallel partitions to engage the sides of a nut
Assignee: Individual
•
Filing: 1955-01-18
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Granted: 1958-01-14
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Expires: 1975-01-18
Abstract
No abstract record available.
Inventors
- 👤 Ugo J Refrigeri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:41
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1003211A
Cited
US1450583A
Cited
US2574107A
Cited
US2538483A
Cited
US2475446A
Cited
DE804736C
Cited
DE837323C
Cited
FR1020232A
Cited
DE848605C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |