US2999525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube-perforating mechanism
Assignee: Individual
•
Filing: 1958-09-22
•
Granted: 1961-09-12
•
Expires: 1978-09-22
Abstract
No abstract record available.
Inventors
- 👤 Carl A Mercer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:18
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/28; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/156; B21C37/157; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4795
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1051803A
Cited
US1061979A
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US1536924A
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US1736955A
Cited
US1909868A
Cited
US1865301A
Cited
US2185337A
Cited
US2217327A
Cited
US2599857A
Cited
US2661579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |