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Patent US2504604A successfully refreshed from Google Patents.
US2504604A
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Stable vertical mechanism
Assignee: Unisys Corp
•
Filing: 1944-07-01
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Granted: 1950-04-18
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Expires: 1964-07-01
Abstract
No abstract record available.
Inventors
- 👤 James D Tear
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:29
CPC Classifications
B; B63; B63B; B63B29/00; B63B29/02; B63B29/04; B63B29/12; G; G01; G01C; G01C19/00; G01C19/02; G01C19/44; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1229
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1731776A
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US1679354A
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US1579038A
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DE530764C
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US1840104A
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US1932210A
Cited
US2297274A
Cited
US2332611A
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US2382993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-17 | 1953-10-17 | 1954-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-17 | 1957-10-17 | 1958-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-17 | 1961-10-17 | 1962-04-18 | $7700.00 | Window Closed / Lapsed |