US2540186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool
Assignee: Bullard Co
•
Filing: 1944-09-29
•
Granted: 1951-02-06
•
Expires: 1964-09-29
Abstract
No abstract record available.
Inventors
- 👤 Edward P Bullard
- 👤 Gustaf R Appelberg
- 👤 Eric G Bjorklund
- 👤 Edward N Cowell
- 👤 Claude M Grinage
- 👤 Ernest H Johnson
- 👤 Paul H Lange
- 👤 Frank H Mussler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:42
CPC Classifications
B; B23; B23Q; B23Q39/00; B23Q39/04; B23Q39/042; Y; Y10; Y10T; Y10T279/00; Y10T279/12; Y10T279/1274; Y10T279/1291; Y10T29/00; Y10T29/51; Y10T29/5124; Y10T29/5127; Y10T29/5128; Y10T29/5179; Y10T82/00; Y10T82/14; Y10T82/141; Y10T82/25; Y10T82/2511; Y10T82/2524
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) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |