US2539419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure pad for riveting machines
Assignee: Individual
•
Filing: 1948-05-11
•
Granted: 1951-01-30
•
Expires: 1968-05-11
Abstract
No abstract record available.
Inventors
- 👤 George T Harcourt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:24
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; B21J15/16; B21J15/20; B21J15/105; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53709; Y10T29/5377; Y10T29/53774
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |