Patent US2575792A successfully refreshed from Google Patents.
US2575792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control mechanism
Assignee: Bullard Co
•
Filing: 1944-08-26
•
Granted: 1951-11-20
•
Expires: 1964-08-26
Abstract
No abstract record available.
Inventors
- 👤 Robinson D Bullard
- 👤 John H Sherwood
- 👤 Paul M Geist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:26
CPC Classifications
B; B23; B23Q; B23Q15/00; Y; Y10; Y10S; Y10S82/00; Y10S82/905; Y10T; Y10T29/00; Y10T29/51; Y10T29/5179; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/300896; Y10T74/00; Y10T74/19; Y10T74/19167
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1586233A
Cited
GB250957A
Cited
US1916706A
Cited
US1879388A
Cited
US2002353A
Cited
US2116593A
Cited
US2135991A
Cited
US2111786A
Cited
US2229450A
Cited
US2316875A
Cited
US2352185A
Cited
US2427493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |