US1335802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feeder for boiler compounds
Assignee: —
•
Filing: —
•
Granted: 1920-04-06
•
Expires: 1937-04-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:32
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/48; B; B01; B01D; B01D11/00; B01D11/02
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) | 1923-04-06 | 1923-10-06 | 1924-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-04-06 | 1927-10-06 | 1928-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-04-06 | 1931-10-06 | 1932-04-06 | $7700.00 | Window Closed / Lapsed |