US2689284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1950-07-20
•
Granted: 1954-09-14
•
Expires: 1970-07-20
Abstract
No abstract record available.
Inventors
- 👤 Hill George Leslie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:07
CPC Classifications
H; H01; H01H; H01H31/00; H01H31/02; H01H31/12; H01H31/122; H01H31/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2094013A
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US2291646A
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US2151159A
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US2203928A
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US2231510A
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US2365113A
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US2394599A
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US2334134A
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US2493601A
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US2466486A
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US2458742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |