US3534896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Riveting machine
Assignee: Gemcor Engr Corp
•
Filing: 1968-08-29
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Granted: 1970-10-20
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Expires: 1988-08-29
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Speller
- 👤 Norman H Nielsen
- 👤 Alexander Krynytzky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:45
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; B21J15/14; B21J15/142; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8773
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) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |