US3017878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall heater
Assignee: COMMONWEALTH CO
•
Filing: 1959-01-05
•
Granted: 1962-01-23
•
Expires: 1979-01-05
Abstract
No abstract record available.
Inventors
- 👤 Lynn B Cayot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:06
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/002; F24C3/004; F24H; F24H3/00; F24H3/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1439925A
Cited
US1288516A
Cited
US2163928A
Cited
US2632435A
Cited
GB803188A
Cited
US2880717A
Cited
US2852017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |