US3475789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blown film dies
Assignee: NRM Corp
•
Filing: 1968-01-16
•
Granted: 1969-11-04
•
Expires: 1988-01-16
Abstract
No abstract record available.
Inventors
- 👤 John F Stroup
- 👤 Lloyd B Sponaugle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:13
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/03; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3229005A
Cited
US2910726A
Cited
US3358329A
Cited
US3394433A
Cited
US3343215A
Cited
US3291979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |