Patent US1062997A successfully refreshed from Google Patents.
Patent US1356568A successfully refreshed from Google Patents.
US1356568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-burning furnace
Assignee: Individual
•
Filing: 1918-12-30
•
Granted: 1920-10-26
•
Expires: 1938-12-30
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:56
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/60; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8275; Y10T137/8292; Y10T137/8309; Y10T137/8593; Y10T137/87096; Y10T137/87153; Y10T137/87161
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1923-10-26 | 1924-04-26 | 1924-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-10-26 | 1928-04-26 | 1928-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-10-26 | 1932-04-26 | 1932-10-26 | $7700.00 | Window Closed / Lapsed |