US2458418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous and intermittent recording instrument
Assignee: International Business Machines Corp
•
Filing: 1944-04-12
•
Granted: 1949-01-04
•
Expires: 1964-04-12
Abstract
No abstract record available.
Inventors
- 👤 Frederick Q Rast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:54
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/10; G01C21/12; G01C21/14; G01C21/20; G01C21/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US334399A
Cited
US727235A
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US1296305A
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US1655615A
Cited
US1855613A
Cited
US1873126A
Cited
DE594675C
Cited
US2118081A
Cited
US2171327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-04 | 1952-07-05 | 1953-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-04 | 1956-07-05 | 1957-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-04 | 1960-07-05 | 1961-01-04 | $7700.00 | Window Closed / Lapsed |