US2978569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming holes in sheet metal
Assignee: Motors Liquidation Co
•
Filing: 1958-11-07
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Granted: 1961-04-04
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Expires: 1978-11-07
Abstract
No abstract record available.
Inventors
- 👤 Napolcon P Boretti
- 👤 Arthur F Hessler
- 👤 Jr Thomas W Shearer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:06
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/013
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2125172A
Cited
US2059236A
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US2527490A
Cited
US2751482A
Cited
US2706236A
Cited
US2798145A
Cited
US2852658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |