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US3472475A
Expired / Lapsed
US
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Assignee: W J SEIDENSTICKER CO
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Filing: 1967-07-28
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Granted: 1969-10-14
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Expires: 1987-07-28
Abstract
No abstract record available.
Inventors
- 👤 John Rudiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:40
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/18; E01; E01D; E01D21/00; E04G13/00; E04G13/06; E04G13/066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2855654A
Cited
US3122347A
Cited
AT231685B
Cited
GB1019026A
Cited
US3119590A
Cited
US3286972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |