US1448446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing device
Assignee: Pfister & Vogel Leather Co
•
Filing: 1921-06-30
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Granted: 1923-03-13
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Expires: 1941-06-30
Abstract
No abstract record available.
Inventors
- 👤 Edwin F Hulbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:13
CPC Classifications
A; A23; A23G; A23G1/00; A23G1/04; A23G1/20; A23G1/24; B; B01; B01F; B01F31/00; B01F31/50; A23G3/00; A23G3/02; A23G3/0205; A23G3/0215
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) | 1926-03-12 | 1926-09-11 | 1927-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-03-12 | 1930-09-11 | 1931-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-03-12 | 1934-09-11 | 1935-03-13 | $7700.00 | Window Closed / Lapsed |