US2615470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic air valve
Assignee: Individual
•
Filing: 1947-04-23
•
Granted: 1952-10-28
•
Expires: 1967-04-23
Abstract
No abstract record available.
Inventors
- 👤 Everett H Bickley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:41
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0648; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US338261A
Cited
US1319787A
Cited
GB190716513A
Cited
US959618A
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US1302511A
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US1697953A
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US1842595A
Cited
US1892917A
Cited
US1852918A
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DE616502C
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US2072616A
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GB471427A
Cited
US2250021A
Cited
US2370752A
Cited
US2428269A
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US2381309A
Cited
US2391800A
Cited
US2471365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |