US2643557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fixture for spherical members
Assignee: Individual
•
Filing: 1949-09-27
•
Granted: 1953-06-30
•
Expires: 1969-09-27
Abstract
No abstract record available.
Inventors
- 👤 Walter T Grove
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:41
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/02; B23Q3/06; B23Q3/062; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/48; Y; Y10; Y10S; Y10S408/00; Y10S408/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US146923A
Cited
US408259A
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US1396202A
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US2278314A
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US2269946A
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US2349394A
Cited
US2490120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |