US1784705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary air-pressure stop
Assignee: CORRINE OLSEN
•
Filing: 1928-10-18
•
Granted: 1930-12-09
•
Expires: 1948-10-18
Abstract
No abstract record available.
Inventors
- 👤 Emil J Olsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:39
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/02; F16K5/0207; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/877; Y10T137/87708; Y10T137/87724
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) | 1933-12-08 | 1934-06-09 | 1934-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-12-08 | 1938-06-09 | 1938-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-12-08 | 1942-06-09 | 1942-12-09 | $7700.00 | Window Closed / Lapsed |