US2648181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stacker mechanism
Assignee: VALLEY RES CORP
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Filing: 1950-03-21
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Granted: 1953-08-11
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Expires: 1970-03-21
Abstract
No abstract record available.
Inventors
- 👤 Thomas B Dalton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:34
CPC Classifications
B; B65; B65H; B65H31/00; B65H31/30; B65H31/3054; B65B; B65B35/00; B65B35/30; B65B35/40; B65B35/50; B65B35/52; B65H31/3081; B65H2301/00; B65H2301/40; B65H2301/42; B65H2301/421; B65H2301/4212; B65H2301/42122; B65H2301/422; B65H2301/4226; B65H2301/42266
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |