US2173464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined surface gauge and comparator
Assignee: Standard Gage Co Inc
•
Filing: 1938-04-08
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Granted: 1939-09-19
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Expires: 1958-04-08
Abstract
No abstract record available.
Inventors
- 👤 Erik H Aldeborgh
- 👤 Alfred H Emery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:36
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/0002; G01B5/0004
Claims Analysis
Total Claims: 0
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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) | 1942-09-18 | 1943-03-20 | 1943-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-09-18 | 1947-03-20 | 1947-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-09-18 | 1951-03-20 | 1951-09-19 | $7700.00 | Window Closed / Lapsed |