Patent US4233983A successfully refreshed from Google Patents.
Patent US2875987A successfully refreshed from Google Patents.
US2875987A
Expired / Lapsed
US
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Coil inner tube spacer
Assignee: American Radiator and Standard Sanitary Corp
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Filing: 1957-01-24
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Granted: 1959-03-03
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Expires: 1977-01-24
Abstract
No abstract record available.
Inventors
- 👤 Valley Robert Joseph La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:33
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/007; F28F9/013; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1847608A
Cited
US2213053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |