US3463218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1967-05-18
•
Granted: 1969-08-26
•
Expires: 1987-05-18
Abstract
No abstract record available.
Inventors
- 👤 Ernest W Cannon
- 👤 David W Byrens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:09
CPC Classifications
A; A47; A47G; A47G5/00; E; E04; E04B; E04B2/00; E04B2/74; E04B2/7407; E04B2/7416; E04B2/7422; E04B2/7427; E04B2002/7483
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US435604A
Cited
US1022137A
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US1045854A
Cited
GB394733A
Cited
GB487896A
Cited
US2655740A
Cited
US3017969A
Cited
US2919034A
Cited
US3204689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |