US2483737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal-combustion burner for heaters
Assignee: Stewart Warner Corp
•
Filing: 1943-07-10
•
Granted: 1949-10-04
•
Expires: 1963-07-10
Abstract
No abstract record available.
Inventors
- 👤 William C Parrish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:28
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/06; B64D13/08; F; F23; F23D; F23D11/00; Y; Y02; Y02T; Y02T50/00; Y02T50/50
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-03 | 1953-04-04 | 1953-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-03 | 1957-04-04 | 1957-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-03 | 1961-04-04 | 1961-10-04 | $7700.00 | Window Closed / Lapsed |