US3022812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed control means
Assignee: Individual
•
Filing: 1957-02-21
•
Granted: 1962-02-27
•
Expires: 1977-02-21
Abstract
No abstract record available.
Inventors
- 👤 Alvin F Groll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:43
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/02; B21D43/021; B21D43/022; B21C; B21C47/00; B21C47/34; B65; B65H; B65H23/00; B65H23/04; B65H23/18; B65H23/182; B65H23/1825; B65H23/188; B65H23/1888; B65H49/00; B65H49/18; B65H49/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2045539A
Cited
US1907760A
Cited
US2246840A
Cited
US2278240A
Cited
US2394824A
Cited
US2675190A
Cited
GB744063A
Cited
US2874916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |