Patent US3470662A successfully refreshed from Google Patents.
US3470662A
Expired / Lapsed
US
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Expansion joint
Assignee: Sandell Manufacturing Co Inc
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Filing: 1968-04-17
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Granted: 1969-10-07
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Expires: 1988-04-17
Abstract
No abstract record available.
Inventors
- 👤 Irving H Kellman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:34
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/66; E04B1/68; E04B1/681; E04B1/6803; E04B1/6804
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE25733E
Cited
US2226886A
Cited
US2354485A
Cited
US3272684A
Cited
US3218771A
Cited
US3300913A
Cited
US3363383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |