US2998806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Booster heater
Assignee: Stewart Warner Corp
•
Filing: 1958-05-22
•
Granted: 1961-09-05
•
Expires: 1978-05-22
Abstract
No abstract record available.
Inventors
- 👤 Vernon N Tramontini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:19
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/22; B60H1/2203; B60H1/2209; B60H2001/2268; B60H2001/2271
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1613615A
Cited
US2022728A
Cited
US2531459A
Cited
GB664168A
Cited
US2722180A
Cited
US2783755A
Cited
US2847953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |