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US1855551A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic igniter
Assignee: E F WHEAT
•
Filing: 1929-09-21
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Granted: 1932-04-26
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Expires: 1949-09-21
Abstract
No abstract record available.
Inventors
- 👤 Sherman D Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:54
CPC Classifications
F; F23; F23Q; F23Q3/00
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) | 1935-04-26 | 1935-10-26 | 1936-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-04-26 | 1939-10-26 | 1940-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-04-26 | 1943-10-26 | 1944-04-26 | $7700.00 | Window Closed / Lapsed |