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US3447429A
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Assignee: JOSEPH W BOWERSOX
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Filing: 1967-04-24
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Granted: 1969-06-03
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Expires: 1987-04-24
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Bowersox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:45
CPC Classifications
E; E01; E01F; E01F13/00; E01F13/04; E01F13/044; E01F13/046; E01F9/00; E01F9/50; E01F9/576; E01F9/594; E01F9/60; E01F9/623; E01F9/646; E01F9/654
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |