US2203525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing means for shafts
Assignee: Individual
•
Filing: 1936-08-04
•
Granted: 1940-06-04
•
Expires: 1956-08-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Samuel F Dupree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:43
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3464; F16J15/348; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/12; F04D29/126; F16J15/36; F05; F05D; F05D2260/00; F05D2260/60; F05D2260/602; F05D2260/6022; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49236
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) | 1943-06-04 | 1943-12-04 | 1944-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-06-04 | 1947-12-04 | 1948-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-06-04 | 1951-12-04 | 1952-06-04 | $7700.00 | Window Closed / Lapsed |