US2644131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timing indicator for internal-combustion engines
Assignee: Snap On Inc
•
Filing: 1948-10-01
•
Granted: 1953-06-30
•
Expires: 1968-10-01
Abstract
No abstract record available.
Inventors
- 👤 George M Walraven
- 👤 William R Elwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:06
CPC Classifications
F; F02; F02P; F02P17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US896300A
Cited
US1158578A
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US1886326A
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US2006341A
Cited
US2039214A
Cited
US2231660A
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US2337237A
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US2302248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |