US2954639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doll
Assignee: Individual
•
Filing: 1955-02-18
•
Granted: 1960-10-04
•
Expires: 1975-02-18
Abstract
No abstract record available.
Inventors
- 👤 Walter K Walss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:36
CPC Classifications
A; A63; A63H; A63H13/00; A63H13/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1050793A
Cited
GB119771A
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US1667104A
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FR568649A
Cited
US1695675A
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US1762374A
Cited
US2137371A
Cited
US2448668A
Cited
US2669064A
Cited
US2653415A
Cited
US2669802A
Cited
US2670568A
Cited
US2701933A
Cited
US2689431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |