US2621552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool construction
Assignee: SPRINGFIELD MACHINE TOOL CO
•
Filing: 1949-07-14
•
Granted: 1952-12-16
•
Expires: 1969-07-14
Abstract
No abstract record available.
Inventors
- 👤 Richard C Montanus
- 👤 Roy H Mumma
- 👤 Robert H Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:51
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/0054; B23Q1/01; B23Q1/015; B23Q1/25; B23Q1/26; B23Q1/34; B23Q1/36; B23Q11/00; B23Q11/0032; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2566
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |