Patent US2715152A successfully refreshed from Google Patents.
US2715152A
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US
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Assignee: HALLETT Manufacturing CO
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Filing: 1951-06-18
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Granted: 1955-08-09
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Expires: 1971-06-18
Abstract
No abstract record available.
Inventors
- 👤 Vernon W Balzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:33
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/08; H02G3/088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US739707A
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GB190824A
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GB451302A
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US2427965A
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US2440279A
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US2469474A
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US2604507A
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US2521056A
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US2563712A
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US2532538A
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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) | 1958-08-08 | 1959-02-07 | 1959-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-08 | 1963-02-07 | 1963-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-08 | 1967-02-07 | 1967-08-09 | $7700.00 | Window Closed / Lapsed |