Patent US1772347A successfully refreshed from Google Patents.
US1772347A
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Liquid-aeration apparatus and process
Assignee: Beazer East Inc
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Filing: 1926-03-29
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Granted: 1930-08-05
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Expires: 1946-03-29
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Gollmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:50
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/20; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/12; C10K1/124; C10K1/125; C02F2103/00; C02F2103/18; Y; Y02; Y02W; Y02W10/00; Y02W10/10
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) | 1933-08-04 | 1934-02-03 | 1934-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-08-04 | 1938-02-03 | 1938-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-08-04 | 1942-02-03 | 1942-08-05 | $7700.00 | Window Closed / Lapsed |