US2559919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring forces, especially the force of gravity
Assignee: Bolidens Gruvaktiebolag
•
Filing: 1948-04-03
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Granted: 1951-07-10
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Expires: 1968-04-03
Abstract
No abstract record available.
Inventors
- 👤 Gotthard V A Gustafsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:29
CPC Classifications
G; G01; G01V; G01V7/00; Y; Y10; Y10S; Y10S177/00; Y10S177/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2148523A
Cited
US1746627A
Cited
GB451817A
Cited
US2183115A
Cited
US2291628A
Cited
US2279076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |