Patent US2062407A successfully refreshed from Google Patents.
US2062407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint
Assignee: Spang Chalfant & Co Inc
•
Filing: 1935-02-19
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Granted: 1936-12-01
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Expires: 1955-02-19
Abstract
No abstract record available.
Inventors
- 👤 George M Eaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:56
CPC Classifications
F; F16; F16L; F16L15/00; F16L15/001; F16L15/004; E; E21; E21B; E21B17/00; E21B17/02; E21B17/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-12-01 | 1940-06-01 | 1940-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-12-01 | 1944-06-01 | 1944-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-12-01 | 1948-06-01 | 1948-12-01 | $7700.00 | Window Closed / Lapsed |