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US3058341A
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Force measuring device for determining the stresses upon the frameworks in underground excavations and the like
Assignee: BOCHUMER GES fur GRUBENAUSBAU
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Filing: 1959-03-13
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Granted: 1962-10-16
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Expires: 1979-03-13
Abstract
No abstract record available.
Inventors
- 👤 Heintzmann Hans Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:27
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/02; Y; Y10; Y10S; Y10S116/00; Y10S116/35
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US822244A
Cited
GB189726809A
Cited
CH161086A
Cited
US2577100A
Cited
US2642091A
Cited
US2639613A
Cited
US2898761A
Cited
US2973641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |