US2433874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine-tool apparatus
Assignee: Sperry Gyroscope Co Inc
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Filing: 1944-12-14
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Granted: 1948-01-06
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Expires: 1964-12-14
Abstract
No abstract record available.
Inventors
- 👤 Sigurd F Varian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:36
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/26; B23Q1/34; B23Q11/00; B23Q11/0032; Y; Y10; Y10S; Y10S415/00; Y10S415/904; Y10T; Y10T408/00; Y10T408/16; Y10T408/17; Y10T408/65; Y10T408/675
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-05 | 1951-07-07 | 1952-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-05 | 1955-07-07 | 1956-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-05 | 1959-07-07 | 1960-01-06 | $7700.00 | Window Closed / Lapsed |