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US2466503A
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Assignee: Vokes Ltd
•
Filing: 1944-05-22
•
Granted: 1949-04-05
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Expires: 1964-05-22
Abstract
No abstract record available.
Inventors
- 👤 Stokes Edward Arthur
- 👤 Crawford Richard Guy Southern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:32
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/022; Y; Y10; Y10S; Y10S261/00; Y10S261/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1768468A
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US12498A
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GB540502A
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GB550292A
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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) | 1952-04-04 | 1952-10-04 | 1953-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-04 | 1956-10-04 | 1957-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-04 | 1960-10-04 | 1961-04-05 | $7700.00 | Window Closed / Lapsed |