US3528225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid injecting apparatus for internal combustion engines
Assignee: Individual
•
Filing: 1966-12-07
•
Granted: 1970-09-15
•
Expires: 1986-12-07
Abstract
No abstract record available.
Inventors
- 👤 Frank A Manfredi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:53
CPC Classifications
F; F02; F02M; F02M25/00; Y; Y10; Y10S; Y10S55/00; Y10S55/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1441209A
Cited
US1201300A
Cited
GB169054A
Cited
US1504018A
Cited
US1623053A
Cited
US1595704A
Cited
US1936243A
Cited
US2681048A
Cited
US3050044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |