US3520480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel spray nozzle
Assignee: Ex-Cell-O Corp
•
Filing: 1968-04-24
•
Granted: 1970-07-14
•
Expires: 1988-04-24
Abstract
No abstract record available.
Inventors
- 👤 Robert M Halvorsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:34
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/24; F23D11/26; F23D11/36; F23D11/38; F23D11/383
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2786719A
Cited
US2921747A
Cited
US2954172A
Cited
US3032279A
Cited
US3081952A
Cited
US3443760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |