US2684239A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1951-06-25
•
Granted: 1954-07-20
•
Expires: 1971-06-25
Abstract
No abstract record available.
Inventors
- 👤 Jr William O Gaffney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:15
CPC Classifications
E; E05; E05F; E05F17/00; E05F17/004; E05F15/00; E05F15/60; E05F15/603; E05F15/611; E05F15/63; E05F15/70; E05F15/71
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2342597A
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US2531116A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |