US3020831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for applying circumferential pressure on the periphery of a circular object
Assignee: Individual
•
Filing: 1958-09-04
•
Granted: 1962-02-13
•
Expires: 1978-09-04
Abstract
No abstract record available.
Inventors
- 👤 Oliver G Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:31
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US941543A
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US978976A
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US1167009A
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FR496508A
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US1246557A
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US1738504A
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US2253713A
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US2317440A
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US2434607A
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US2682908A
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US2712850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |