US3523631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foil feeding system
Assignee: Skinner Precision Industries Inc
•
Filing: 1969-05-16
•
Granted: 1970-08-11
•
Expires: 1989-05-16
Abstract
No abstract record available.
Inventors
- 👤 Kwangho Chung
- 👤 George A Goepfrich
- 👤 Edward J Milano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:51
CPC Classifications
B; B21; B21C; B21C47/00; B21C47/003; B21C47/34; B21C47/345; B21C47/3466; B21C47/3475; B21C47/3483; B21D; B21D43/00; B21D43/02; B21D43/18; H; H02; H02K; H02K41/00; H02K41/02; H02K41/025; H02N; H02N13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1706741A
Cited
US2603688A
Cited
GB716229A
Cited
US2731212A
Cited
US2788209A
Cited
US2831131A
Cited
US3061159A
Cited
US3032245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |