US1335392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater for carbureters
Assignee: Findeisen & Kropf Manufacturing Co
•
Filing: 1917-12-26
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Granted: 1920-03-30
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Expires: 1937-12-26
Abstract
No abstract record available.
Inventors
- 👤 Charles L Rayfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:56
CPC Classifications
F; F02; F02M; F02M31/00; F02M31/02; F02M31/12; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
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) | 1923-03-30 | 1923-09-29 | 1924-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-03-30 | 1927-09-29 | 1928-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-03-30 | 1931-09-29 | 1932-03-30 | $7700.00 | Window Closed / Lapsed |