US3491930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Riveting machine
Assignee: Individual
•
Filing: 1967-12-07
•
Granted: 1970-01-27
•
Expires: 1987-12-07
Abstract
No abstract record available.
Inventors
- 👤 John A Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:12
CPC Classifications
B; B21; B21F; B21F11/00; B21J; B21J15/00; B21J15/02; B21J15/04; B21J15/10; B21J15/16; B21J15/20; B21J15/30; B21J15/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2421474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |