Patent US2471852A successfully refreshed from Google Patents.
US2471852A
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Dispenser with flow restricting valve
Assignee: Individual
•
Filing: 1947-07-19
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Granted: 1949-05-31
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Expires: 1967-07-19
Abstract
No abstract record available.
Inventors
- 👤 Bau Robert Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:24
CPC Classifications
A; A45; A45D; A45D40/00; A45D40/0068; A45D40/0075; B; B65; B65D; B65D83/00; B65D83/76; B65D83/764; B65D83/766; B65D83/771; B65D83/7713; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/87981; Y10T137/87997; Y10T137/88005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |