US2226060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manual gauge hatch
Assignee: JERMAN LEWIS JOHNSON
•
Filing: 1940-07-30
•
Granted: 1940-12-24
•
Expires: 1960-07-30
Abstract
No abstract record available.
Inventors
- 👤 Jr George T Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:53
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; G01N31/222; G01F; G01F23/00; G01F23/0023; G01N1/00; G01N1/02; G01N1/10; G01N1/12; G01N2001/1031; G01N2001/1037
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1943-12-24 | 1944-06-24 | 1944-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-24 | 1948-06-24 | 1948-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-24 | 1952-06-24 | 1952-12-24 | $7700.00 | Window Closed / Lapsed |