Patent US2807717A successfully refreshed from Google Patents.
US2807717A
Expired / Lapsed
US
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Measuring and indicating system
Assignee: International Business Machines Corp
•
Filing: 1952-02-07
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Granted: 1957-09-24
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Expires: 1972-02-07
Abstract
No abstract record available.
Inventors
- 👤 Robert C Paulsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:05
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/22; H03M1/24; H03M1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2265290A
Cited
US2477770A
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US2597352A
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US2562295A
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US2485731A
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US2570225A
Cited
US2727144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |