US3498689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: ROGER L HANSEN
•
Filing: 1968-06-18
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Granted: 1970-03-03
•
Expires: 1988-06-18
Abstract
No abstract record available.
Inventors
- 👤 Roger L Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:26
CPC Classifications
D; D06; D06F; D06F95/00; D06F95/002; B; B62; B62B; B62B3/00; B62B3/002; B62B3/003; B62B3/02; B62B2202/00; B62B2202/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US870835A
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US1427388A
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US1518497A
Cited
US1828331A
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US2652308A
Cited
US2844257A
Cited
US3265404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |