US2679997A
Expired / Lapsed
US
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Assignee: EDWIN S BURROWS
•
Filing: 1950-09-23
•
Granted: 1954-06-01
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Expires: 1970-09-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur O Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:54
CPC Classifications
G; G09; G09F; G09F1/00; G09F1/04; G09F1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1148114A
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US1164755A
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US1411768A
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US1485786A
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US2132799A
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US2195985A
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US2465908A
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US2431835A
Cited
US2441395A
Cited
GB628720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |