Patent US2999525A successfully refreshed from Google Patents.
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 16:29
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
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1051803A
Cited
US1061979A
Cited
US1536924A
Cited
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 |