Patent US3501916A successfully refreshed from Google Patents.
US3501916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular components for forming a rocket engine combustion chamber
Assignee: Bolkow GmbH
•
Filing: 1967-09-20
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Granted: 1970-03-24
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Expires: 1987-09-20
Abstract
No abstract record available.
Inventors
- 👤 Karl Butter
- 👤 Carl Helmut Dederra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:46
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/62; F02K9/64; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49346
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1310130A
Cited
US3190070A
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US3384154A
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DE1099805B
Cited
US3154141A
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FR1258369A
Cited
US3182448A
Cited
US3235947A
Cited
US3254487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-23 | 1973-09-22 | 1974-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-23 | 1977-09-22 | 1978-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-23 | 1981-09-22 | 1982-03-24 | $7700.00 | Window Closed / Lapsed |