US2553833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stress measuring apparatus
Assignee: C MORGAN RIFENBERGH
•
Filing: 1947-07-11
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Granted: 1951-05-22
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Expires: 1967-07-11
Abstract
No abstract record available.
Inventors
- 👤 Rifenbergh Clare Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:25
CPC Classifications
G; G01; G01L; G01L3/00; G01L3/02; G01L3/04; G01L3/10; G01L3/101; G01L3/102; G01L3/105; Y; Y10; Y10S; Y10S73/00; Y10S73/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2053560A
Cited
GB442441A
Cited
FR831342A
Cited
FR49262E
Cited
US2337231A
Cited
US2365073A
Cited
US2365565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |