US1482848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cut-off device for vacuum pipe lines
Assignee: Individual
•
Filing: 1923-01-18
•
Granted: 1924-02-05
•
Expires: 1943-01-18
Abstract
No abstract record available.
Inventors
- 👤 Johnson John Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:57
CPC Classifications
A; A01; A01J; A01J5/00; A01J5/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7869; Y10T137/7871; Y10T137/7873; Y10T137/8158; Y10T137/8359
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) | 1927-02-04 | 1927-08-06 | 1928-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-02-04 | 1931-08-06 | 1932-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-02-04 | 1935-08-06 | 1936-02-05 | $7700.00 | Window Closed / Lapsed |