US2073784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for circulating water in swimming pools
Assignee: Josam Manufacturing Co
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Filing: 1934-12-04
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Granted: 1937-03-16
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Expires: 1954-12-04
Abstract
No abstract record available.
Inventors
- 👤 Louis J Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:26
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/12; E04H4/1209; C; C02; C02F; C02F1/00; C02F1/52; C02F1/5281; C02F2103/00; C02F2103/42; Y; Y10; Y10S; Y10S4/00; Y10S4/09; Y10S4/10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87587; Y10T137/87619
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-03-15 | 1940-09-14 | 1941-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-03-15 | 1944-09-14 | 1945-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-03-15 | 1948-09-14 | 1949-03-16 | $7700.00 | Window Closed / Lapsed |