US3028097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater for animal pens and the like
Assignee: JOHNSON GAS APPLIANCE Co
•
Filing: 1957-07-18
•
Granted: 1962-04-03
•
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 12:04
CPC Classifications
A; A01; A01K; A01K1/00; A01K1/02; A01K1/0218; A01K1/0047; A01K1/0076
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE252925C
Cited
BE527195A
Cited
US1359049A
Cited
DE326163C
Cited
US1535097A
Cited
GB399681A
Cited
US2037861A
Cited
US2232342A
Cited
US2503191A
Cited
US2579646A
Cited
US2764127A
Cited
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 |