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US2556572A
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Assignee: Individual
•
Filing: 1944-08-23
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Granted: 1951-06-12
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Expires: 1964-08-23
Abstract
No abstract record available.
Inventors
- 👤 William A Brinkhurst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:01
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/22; F16H25/2285; F16H25/2295; F16H25/2025; F16H25/229; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18608
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1140646A
Cited
US1079883A
Cited
US1538091A
Cited
US1724616A
Cited
US2134748A
Cited
US2477701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |