Patent US4380525A successfully refreshed from Google Patents.
US2708896A
Expired / Lapsed
US
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Indicating protective covers for pipe flanges and valves
Assignee: Individual
•
Filing: 1954-05-12
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Granted: 1955-05-24
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Expires: 1974-05-12
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 16:36
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/14; F16L59/16; F16L59/168; Y; Y10; Y10S; Y10S116/00; Y10S116/14; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7043; Y10T436/00; Y10T436/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2249867A
Cited
US2601840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-23 | 1958-11-22 | 1959-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-23 | 1962-11-22 | 1963-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-23 | 1966-11-22 | 1967-05-24 | $7700.00 | Window Closed / Lapsed |