Patent US3104218A successfully refreshed from Google Patents.
US3104218A
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US
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Pressure tube structure
Assignee: General Dynamics Corp
•
Filing: 1958-10-01
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Granted: 1963-09-17
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Expires: 1978-10-01
Abstract
No abstract record available.
Inventors
- 👤 Thomas O P Speidel
- 👤 Robert C Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:44
CPC Classifications
G; G21; G21C; G21C1/00; G21C1/04; G21C1/06; G21C1/14; G21C1/16; G21C1/18; G21C1/20; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S165/00; Y10S165/903; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/4962
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2056563A
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US2018085A
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US2212481A
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US2229344A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |