US2198133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostat
Assignee: Knapp Monarch Co
•
Filing: 1939-04-03
•
Granted: 1940-04-23
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Expires: 1959-04-03
Abstract
No abstract record available.
Inventors
- 👤 Howard A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:12
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0227; H05B1/0252; H05B1/0258; H05B1/0261; H05B1/0263; H01; H01H; H01H43/00; H01H43/30; H01H43/301; H01H43/302; H01H43/304
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) | 1943-04-23 | 1943-10-23 | 1944-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-23 | 1947-10-23 | 1948-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-23 | 1951-10-23 | 1952-04-23 | $7700.00 | Window Closed / Lapsed |