US1704982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-softening apparatus
Assignee: TRUPAR Manufacturing Co
•
Filing: 1927-07-14
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Granted: 1929-03-12
•
Expires: 1947-07-14
Abstract
No abstract record available.
Inventors
- 👤 Lynn G Lindsay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:00
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/42; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86445; Y10T137/86461
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) | 1932-03-11 | 1932-09-10 | 1933-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-03-11 | 1936-09-10 | 1937-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-03-11 | 1940-09-10 | 1941-03-12 | $7700.00 | Window Closed / Lapsed |