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US2979805A
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Assignee: Individual
•
Filing: 1957-07-01
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Granted: 1961-04-18
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Expires: 1977-07-01
Abstract
No abstract record available.
Inventors
- 👤 George B Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:27
CPC Classifications
B; B23; B23B; B23B5/00; B23B5/16; B23B27/00; B23B27/08; Y; Y10; Y10T; Y10T407/00; Y10T407/23; Y10T407/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US169913A
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US641997A
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US1223438A
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US1695955A
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US1701980A
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US1855971A
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US1835958A
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US2335570A
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US2370273A
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US2679679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |