US2703176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective equipment and method for water recirculating systems
Assignee: WATER SERVICE LAB Inc
•
Filing: 1950-08-28
•
Granted: 1955-03-01
•
Expires: 1970-08-28
Abstract
No abstract record available.
Inventors
- 👤 Henry L Shuldener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:51
CPC Classifications
F; F24; F24D; F24D19/00; F24D19/0092; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/4891
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2192736A
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GB190519378A
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US888469A
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US1427545A
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US1692706A
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US1796407A
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US2064627A
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US2126430A
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US2137755A
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US2299748A
Cited
US2532973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-28 | 1958-08-30 | 1959-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-28 | 1962-08-30 | 1963-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-28 | 1966-08-30 | 1967-03-01 | $7700.00 | Window Closed / Lapsed |