US3495688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: ELMER H ISAACKS
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Filing: 1968-10-16
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Granted: 1970-02-17
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Expires: 1988-10-16
Abstract
No abstract record available.
Inventors
- 👤 Elmer H Isaacks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:44
CPC Classifications
B; B62; B62B; B62B5/00; B62B5/04; B62B5/0404; B62B5/0423
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2964140A
Cited
US3434571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |