US2601840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating protective cover for pipe flanges and valves
Assignee: Individual
•
Filing: 1950-11-29
•
Granted: 1952-07-01
•
Expires: 1970-11-29
Abstract
No abstract record available.
Inventors
- 👤 Millard F Smith
- 👤 Jr Edward S Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:56
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/16; F16L23/167; F16L2201/00; F16L2201/30; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7043; Y10T436/00; Y10T436/15
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) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |