US2481849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatically controlled space heater
Assignee: Vapor Heating Corp
•
Filing: 1943-09-03
•
Granted: 1949-09-13
•
Expires: 1963-09-03
Abstract
No abstract record available.
Inventors
- 👤 Timothy J Lehane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:25
CPC Classifications
B; B61; B61D; B61D27/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1649090A
Cited
US1803629A
Cited
US1798923A
Cited
US1961252A
Cited
US1921172A
Cited
US2075160A
Cited
US2063613A
Cited
US2171803A
Cited
US2168680A
Cited
US2204403A
Cited
GB499235A
Cited
US2181436A
Cited
US2307724A
Cited
US2328472A
Cited
US2363413A
Cited
US2394708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-12 | 1953-03-14 | 1953-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-12 | 1957-03-14 | 1957-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-12 | 1961-03-14 | 1961-09-13 | $7700.00 | Window Closed / Lapsed |