US3381614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid pretreated polyethyleneglycol terephthalate sheet as insulation for solid rocket propellent charges
Assignee: Individual
•
Filing: 1966-09-28
•
Granted: 1968-05-07
•
Expires: 1986-09-28
Abstract
No abstract record available.
Inventors
- 👤 Ratz Heinz
- 👤 Brachert Heinrich
- 👤 Richter Ulf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:26
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2958288A
Cited
US2999462A
Cited
US3012506A
Cited
US2643611A
Cited
US3215028A
Cited
US3250829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |