US2928304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cut-off apparatus
Assignee: Ajax Manufacturing Co
•
Filing: 1956-02-07
•
Granted: 1960-03-15
•
Expires: 1976-02-07
Abstract
No abstract record available.
Inventors
- 👤 William A Ehlert
- 👤 Leo D Mersek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:35
CPC Classifications
B; B23; B23D; B23D25/00; B23D25/02; B23D25/04; B21; B21F; B21F11/00; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4443; Y10T83/4448; Y10T83/4463; Y10T83/4465; Y10T83/566; Y10T83/5815; Y10T83/626
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US445294A
Cited
US1288402A
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US1690503A
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US1984710A
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US2325139A
Cited
US2507448A
Cited
US2507452A
Cited
US2572137A
Cited
US2569197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |