US3532271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray nozzles with spiral flow fluid
Assignee: FREDERICK F POLNAUER
•
Filing: 1967-02-23
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Granted: 1970-10-06
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Expires: 1987-02-23
Abstract
No abstract record available.
Inventors
- 👤 Frederick F Polnauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:18
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/34; B05B1/3405; B05B1/341; B05B1/3421; B05B1/3431; B05B1/3436; F; F23; F23D; F23D11/00; F23D11/36; F23D11/38; F23D11/383
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2218110A
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US2378348A
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US2551276A
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US2751253A
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US2719755A
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GB760972A
Cited
US2904263A
Cited
US3013731A
Cited
US3182916A
Cited
US3198214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |