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Patent US3523670A successfully refreshed from Google Patents.
US3523670A
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Coupling device for a tripod
Assignee: Bolkow GmbH
•
Filing: 1968-04-17
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Granted: 1970-08-11
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Expires: 1988-04-17
Abstract
No abstract record available.
Inventors
- 👤 Franz Pfister
- 👤 Eicke Maus
- 👤 Gunther Karpa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:28
CPC Classifications
F; F41; F41A; F41A23/00; F41A23/02; F41A23/12; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32262; Y10T403/32319; Y10T403/32327; Y10T403/32361
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1031075A
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US1074272A
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GB191514280A
Cited
US1671282A
Cited
US3087701A
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US3021158A
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US3011409A
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CH430100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |