US2651235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnifying instrument for precision measuring devices
Assignee: Individual
•
Filing: 1949-09-13
•
Granted: 1953-09-08
•
Expires: 1969-09-13
Abstract
No abstract record available.
Inventors
- 👤 Stephen S Barrows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:50
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE530320C
Cited
US2127711A
Cited
US2355161A
Cited
US2367872A
Cited
US2490648A
Cited
US2503997A
Cited
US2542967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |