Patent US3421970A successfully refreshed from Google Patents.
US3421970A
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Elastomeric composition containing chromic oxide for use as rocket insulation
Assignee: JAMES H DALY
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Filing: 1967-12-15
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Granted: 1969-01-14
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Expires: 1987-12-15
Abstract
No abstract record available.
Inventors
- 👤 James H Daly
- 👤 John G Sommer
- 👤 Daniel A Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:52
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/97; F02K9/974; C; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/5025; C04B41/5033; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K7/00; C08K7/02; C08K7/04; C08K7/10; C08K7/12; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T428/2933; Y10T428/294
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3124542A
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US2238337A
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US2821514A
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US2877504A
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US2835107A
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US3017746A
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US3128706A
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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) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |