US2465445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow spreader
Assignee: Individual
•
Filing: 1945-02-03
•
Granted: 1949-03-29
•
Expires: 1965-02-03
Abstract
No abstract record available.
Inventors
- 👤 Philip H Goldsmith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:21
CPC Classifications
D; D21; D21F; D21F1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1774363A
Cited
US1866607A
Cited
US1846406A
Cited
US2005839A
Cited
US1964291A
Cited
DE617427C
Cited
US2060808A
Cited
US2116763A
Cited
US2205693A
Cited
GB512808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |