US3105892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidifier heater
Assignee: Knapp Monarch Co
•
Filing: 1960-06-06
•
Granted: 1963-10-01
•
Expires: 1980-06-06
Abstract
No abstract record available.
Inventors
- 👤 Andrew S Knapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:42
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/04; F24H; F24H1/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1472569A
Cited
US1594074A
Cited
US1763328A
Cited
US1788515A
Cited
US1908559A
Cited
US2008963A
Cited
US2008945A
Cited
US1945815A
Cited
US1900956A
Cited
FR806893A
Cited
US2177822A
Cited
FR856676A
Cited
US2762886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |