US3493711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Split welding chamber
Assignee: National Aeronautics and Space Administration
•
Filing: 1967-06-01
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Granted: 1970-02-03
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Expires: 1987-06-01
Abstract
No abstract record available.
Inventors
- 👤 Richard A Terselic
- 👤 Louis Rosenblum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:38
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/16; B; B01; B01J; B01J3/00; B01J3/006; B23; B23K; B23K15/00; B23K15/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2567479A
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US3013826A
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US3035147A
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US3135855A
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US3179781A
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US3194936A
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US3192301A
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US3113999A
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US3264004A
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US3351350A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |