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US2723719A
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Perforating machine
Assignee: Cummins Chicago Corp
•
Filing: 1949-09-22
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Granted: 1955-11-15
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Expires: 1969-09-22
Abstract
No abstract record available.
Inventors
- 👤 William G Mantonya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:19
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/02; B26F1/04; Y; Y10; Y10T; Y10T74/00; Y10T74/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US557648A
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US1717335A
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US831822A
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US1112839A
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US1407769A
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DE521365C
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US1982453A
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US2434012A
Cited
US2471198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |