US1822006A
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Assignee: HANDY GOVERNOR Corp
•
Filing: 1929-06-11
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Granted: 1931-09-08
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Expires: 1949-06-11
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Bull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:02
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/14; B01D35/147; B01D21/00; B01D21/0012; B01D21/24; B01D21/2405; B01D21/2411; B01D21/26; B01D21/265; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/88; B01D29/90; B01D29/902; B01D29/908; B01D29/96; B01D2221/00; B01D2221/08
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) | 1934-09-07 | 1935-03-09 | 1935-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-09-07 | 1939-03-09 | 1939-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-09-07 | 1943-03-09 | 1943-09-08 | $7700.00 | Window Closed / Lapsed |