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Patent US2679636A successfully refreshed from Google Patents.
US2679636A
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US
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Method of and apparatus for comparing information
Assignee: Individual
•
Filing: 1952-03-25
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Granted: 1954-05-25
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Expires: 1972-03-25
Abstract
No abstract record available.
Inventors
- 👤 Hillyer Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:21
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G05; G05B; G05B1/00; G05B1/01; G05B1/04; G05B1/08; G06; G06G; G06G7/00; G06G7/12; G06G7/19; G06G7/1914
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2283226A
Cited
US2447336A
Cited
US2530828A
Cited
US2493543A
Cited
US2533242A
Cited
US2594358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |