Patent US2092716A successfully refreshed from Google Patents.
US2092716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water conditioning apparatus
Assignee: Hungerford and Terry Inc
•
Filing: 1935-12-31
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Granted: 1937-09-07
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Expires: 1955-12-31
Abstract
No abstract record available.
Inventors
- 👤 Hungerford Churchill
- 👤 Dickerson Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:06
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/28; C02F1/281; B; B01; B01J; B01J20/00; B01J20/30; B01J20/34; B01J20/3408; B01J49/00; B01J49/05; B01J49/06; B01J49/75; C02F1/001; C02F1/004; C02F2303/00; C02F2303/16
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) | 1940-09-06 | 1941-03-08 | 1941-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-09-06 | 1945-03-08 | 1945-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-09-06 | 1949-03-08 | 1949-09-07 | $7700.00 | Window Closed / Lapsed |