Patent US1365807A successfully refreshed from Google Patents.
US1365807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating device
Assignee: Individual
•
Filing: 1920-04-21
•
Granted: 1921-01-18
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Expires: 1940-04-21
Abstract
No abstract record available.
Inventors
- 👤 Erwin L Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:50
CPC Classifications
F; F24; F24D; F24D3/00; F24D3/12; F24D3/16; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1924-01-18 | 1924-07-19 | 1925-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-01-18 | 1928-07-19 | 1929-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-01-18 | 1932-07-19 | 1933-01-18 | $7700.00 | Window Closed / Lapsed |