Patent US3028097A successfully refreshed from Google Patents.
US3028097A
Expired / Lapsed
US
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Heater for animal pens and the like
Assignee: JOHNSON GAS APPLIANCE Co
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Filing: 1957-07-18
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Granted: 1962-04-03
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Expires: 1977-07-18
Abstract
No abstract record available.
Inventors
- 👤 Charles W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:00
CPC Classifications
A; A01; A01K; A01K1/00; A01K1/02; A01K1/0218; A01K1/0047; A01K1/0076
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB399681A
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US2037861A
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US2232342A
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US2503191A
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US2579646A
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US2764127A
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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) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |