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US2827319A
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Assignee: James Walker and Co Ltd
•
Filing: 1955-11-14
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Granted: 1958-03-18
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Expires: 1975-11-14
Abstract
No abstract record available.
Inventors
- 👤 Pearce Louis William Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:46
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/102; Y; Y10; Y10S; Y10S277/00; Y10S277/921
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1325955A
Cited
US1171090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |