US2604446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water conditioning device
Assignee: Bruner Corp
•
Filing: 1949-09-19
•
Granted: 1952-07-22
•
Expires: 1969-09-19
Abstract
No abstract record available.
Inventors
- 👤 Vernon J Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:31
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/688; Y; Y10; Y10T; Y10T137/00; Y10T137/4891; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86726
Claims Analysis
Total Claims: 0
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US2142947A
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US2489932A
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US2521802A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |