US3449198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Textron Inc
•
Filing: 1966-09-29
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Granted: 1969-06-10
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Expires: 1986-09-29
Abstract
No abstract record available.
Inventors
- 👤 John D Spragg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:40
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1495018A
Cited
US1448699A
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US2633675A
Cited
US3144737A
Cited
US3262233A
Cited
US3128580A
Cited
US3355342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |