US2466002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystal polarity marker
Assignee: Individual
•
Filing: 1946-02-07
•
Granted: 1949-04-05
•
Expires: 1966-02-07
Abstract
No abstract record available.
Inventors
- 👤 Rudolph A Bushcott
- 👤 William J Fry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:36
CPC Classifications
F; F23; F23Q; F23Q2/00; F23Q2/28; F23Q2/285; F23Q2/287; F23Q3/00; F23Q3/002; G; G01; G01R; G01R29/00; G01R29/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US733627A
Cited
US1817181A
Cited
US1866454A
Cited
US1940521A
Cited
US2173552A
Cited
US2232284A
Cited
US2423970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-04 | 1952-10-04 | 1953-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-04 | 1956-10-04 | 1957-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-04 | 1960-10-04 | 1961-04-05 | $7700.00 | Window Closed / Lapsed |