Patent US3513487A successfully refreshed from Google Patents.
US3513487A
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US
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Assignee: Individual
•
Filing: 1968-01-08
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Granted: 1970-05-26
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Expires: 1988-01-08
Abstract
No abstract record available.
Inventors
- 👤 Santo Palermo
- 👤 Rogelio Moreno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:08
CPC Classifications
E; E03; E03D; E03D9/00; E03D9/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1521892A
Cited
US1901160A
Cited
US1885008A
Cited
US1935201A
Cited
US2104271A
Cited
US2605477A
Cited
US2826761A
Cited
US2852782A
Cited
US3425066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |