US3442749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal color change marking of elastomers
Assignee: Boeing Co
•
Filing: 1965-08-06
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Granted: 1969-05-06
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Expires: 1985-08-06
Abstract
No abstract record available.
Inventors
- 👤 Fred L Ward
- 👤 Edwin A Thompson
- 👤 Harold D Ritchie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:22
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/30; B41M5/32; C; C08; C08J; C08J7/00; C08J7/04; C08J7/06; C08J7/08; C08K; C08K3/00; C08K3/30; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06; Y; Y10; Y10S; Y10S428/00; Y10S428/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1924793A
Cited
US2261473A
Cited
US2968637A
Cited
US2985216A
Cited
US3091562A
Cited
US3078182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |