US2908461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supporting device
Assignee: Individual
•
Filing: 1956-04-23
•
Granted: 1959-10-13
•
Expires: 1976-04-23
Abstract
No abstract record available.
Inventors
- 👤 Davis L Coffeen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:41
CPC Classifications
A; A47; A47G; A47G33/00; A47G33/04; A47G33/12; A47G2033/1286
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1057268A
Cited
US1481015A
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US1463734A
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US1540025A
Cited
US1762740A
Cited
US1799513A
Cited
US2503446A
Cited
US2621878A
Cited
US2689701A
Cited
US2755050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |