US2508975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proving ring
Assignee: Tinius Olsen Testing Machine Co
•
Filing: 1946-04-26
•
Granted: 1950-05-23
•
Expires: 1966-04-26
Abstract
No abstract record available.
Inventors
- 👤 Harold C Sundby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:24
CPC Classifications
G; G01; G01G; G01G3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB170392A
Cited
US1623238A
Cited
US1647272A
Cited
US1614354A
Cited
US1724993A
Cited
US1648375A
Cited
GB332165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |