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US1812042A
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Assignee: BARTLETT HAYWARD Co
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Filing: 1929-10-02
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Granted: 1931-06-30
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Expires: 1949-10-02
Abstract
No abstract record available.
Inventors
- 👤 Albert L Genter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:08
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/06; B01D33/073; B01D33/29; B01D33/31; B01D33/35; B01D33/37; B01D33/39; B01D33/44; B01D33/46; B01D33/466; B01D33/48; B01D33/80; B01D33/82; B01D2201/00; B01D2201/28; B01D2201/282
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) | 1934-06-29 | 1934-12-29 | 1935-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-06-29 | 1938-12-29 | 1939-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-06-29 | 1942-12-29 | 1943-06-30 | $7700.00 | Window Closed / Lapsed |