Patent US3520046A successfully refreshed from Google Patents.
US3520046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic machine for attaching fasteners to a workpiece
Assignee: United Carr Inc
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Filing: 1968-03-29
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Granted: 1970-07-14
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Expires: 1988-03-29
Abstract
No abstract record available.
Inventors
- 👤 William A Erhardt Jr
- 👤 John T Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:21
CPC Classifications
A; A41; A41H; A41H37/00; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53039; Y10T29/53057; Y10T29/53478; Y10T29/53522; Y10T29/53709; Y10T29/53787; Y10T29/53791
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2642111A
Cited
US2972747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |