Patent US2819113A successfully refreshed from Google Patents.
US2819113A
Expired / Lapsed
US
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Clamps with composite flexible grab arms
Assignee: Shell Development Co
•
Filing: 1953-10-08
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Granted: 1958-01-07
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Expires: 1973-10-08
Abstract
No abstract record available.
Inventors
- 👤 Clifton H Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:38
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12; B66F9/18; B66F9/184; B66F9/183; Y; Y10; Y10S; Y10S294/00; Y10S294/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23694E
Cited
US2423870A
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US2645372A
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US2746139A
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US2727779A
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US2739009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |