Patent US1362789A successfully refreshed from Google Patents.
US1362789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-heater
Assignee: Individual
•
Filing: 1920-04-02
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Granted: 1920-12-21
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Expires: 1940-04-02
Abstract
No abstract record available.
Inventors
- 👤 William W Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:35
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/18; F24H9/1854; F24H9/1877; F24H9/1881; F24H3/00; F24H3/02; F24H3/06; F24H3/065
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) | 1923-12-21 | 1924-06-21 | 1924-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-12-21 | 1928-06-21 | 1928-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-12-21 | 1932-06-21 | 1932-12-21 | $7700.00 | Window Closed / Lapsed |