US2094971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stoker mechanism
Assignee: Standard Stoker Co
•
Filing: 1933-02-03
•
Granted: 1937-10-05
•
Expires: 1953-02-03
Abstract
No abstract record available.
Inventors
- 👤 Charles J Surdy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:03
CPC Classifications
F; F23; F23K; F23K3/00; F23K3/04
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) | 1940-10-04 | 1941-04-05 | 1941-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-10-04 | 1945-04-05 | 1945-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-10-04 | 1949-04-05 | 1949-10-05 | $7700.00 | Window Closed / Lapsed |