US2122733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stoking installation
Assignee: Iron Fireman Manufacturing Co
•
Filing: 1935-07-31
•
Granted: 1938-07-05
•
Expires: 1955-07-31
Abstract
No abstract record available.
Inventors
- 👤 Jacobus Nicolaas Van Rijswijk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:17
CPC Classifications
F; F23; F23K; F23K3/00; F23K3/10; F23K3/14
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) | 1941-07-04 | 1942-01-03 | 1942-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-07-04 | 1946-01-03 | 1946-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-07-04 | 1950-01-03 | 1950-07-05 | $7700.00 | Window Closed / Lapsed |