Patent US3989911A successfully refreshed from Google Patents.
Patent US1240388A successfully refreshed from Google Patents.
US1240388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-moistening attachment for hot-air furnaces.
Assignee: JOHN T RONAN
•
Filing: 1916-07-08
•
Granted: 1917-09-18
•
Expires: 1936-07-08
Abstract
No abstract record available.
Inventors
- 👤 Millard S Tallmage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:33
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/04
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) | 1920-09-17 | 1921-03-19 | 1921-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-09-17 | 1925-03-19 | 1925-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-09-17 | 1929-03-19 | 1929-09-18 | $7700.00 | Window Closed / Lapsed |