US1858979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1928-07-05
•
Granted: 1932-05-17
•
Expires: 1948-07-05
Abstract
No abstract record available.
Inventors
- 👤 Frank S Barks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:12
CPC Classifications
F; F01; F01L; F01L23/00; F04; F04B; F04B23/00; F04B23/02; F04B23/021; F04B23/023; F04B53/00; F04B53/10; F04B53/12; F04B53/125; F04B53/127; F04B53/14; F04B53/144; F04B53/16; F04B53/162; F04B9/00; F04B9/08; F04B9/12; F04B9/123; F04B9/127
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) | 1935-05-17 | 1935-11-16 | 1936-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-05-17 | 1939-11-16 | 1940-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-05-17 | 1943-11-16 | 1944-05-17 | $7700.00 | Window Closed / Lapsed |