Patent US3548876A successfully refreshed from Google Patents.
US3548876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control arrangement
Assignee: Individual
•
Filing: 1969-02-14
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Granted: 1970-12-22
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Expires: 1989-02-14
Abstract
No abstract record available.
Inventors
- 👤 Taco Jan Viersma
- 👤 Petrus Blok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:30
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/26; F15B21/00; F15B21/08; F15B9/00; F15B9/16; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/8659; Y10T137/86598; Y10T137/86606
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |