Patent US1761377A successfully refreshed from Google Patents.
US1761377A
Expired / Lapsed
US
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Apparatus for collecting suspended dust
Assignee: Associated Lead Manufacturers Ltd
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Filing: 1927-03-09
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Granted: 1930-06-03
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Expires: 1947-03-09
Abstract
No abstract record available.
Inventors
- 👤 Waring Horace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:32
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D46/04; B01D46/66; B01D46/74; B01D46/76; B01D50/00; B01D50/20; B01D2275/00; B01D2275/20; B01D2275/201
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) | 1933-06-02 | 1933-12-02 | 1934-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-06-02 | 1937-12-02 | 1938-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-06-02 | 1941-12-02 | 1942-06-03 | $7700.00 | Window Closed / Lapsed |