US1350433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1916-09-20
•
Granted: 1920-08-24
•
Expires: 1936-09-20
Abstract
No abstract record available.
Inventors
- 👤 Frank K Atkins
- 👤 Earl F Atkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:26
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/16; B01D29/00; B01D29/39; B01D29/41; B01D29/62; B01D29/64; B01D29/6469; B01D29/6476; B01D29/66; B01D29/661; B01D35/12
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) | 1923-08-24 | 1924-02-23 | 1924-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-08-24 | 1928-02-23 | 1928-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-08-24 | 1932-02-23 | 1932-08-24 | $7700.00 | Window Closed / Lapsed |