US2709425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diesel engine cold starting apparatus
Assignee: HERCULES MOTORS Corp
•
Filing: 1950-02-07
•
Granted: 1955-05-31
•
Expires: 1970-02-07
Abstract
No abstract record available.
Inventors
- 👤 Matthew C Kuepfer
- 👤 Erwin A V Horiak
- 👤 Seraphin J Bouchez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:17
CPC Classifications
F; F02; F02N; F02N99/00; F02N99/002; F02N99/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US961423A
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US1070131A
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US1096604A
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US1164931A
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US1338398A
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GB148689A
Cited
US1344805A
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GB160075A
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US1498918A
Cited
GB254359A
Cited
US2190348A
Cited
CH242002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |