Patent US3438840A successfully refreshed from Google Patents.
US3438840A
Expired / Lapsed
US
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Decorative wooden block surface
Assignee: WILLIAM R GEORGE
•
Filing: 1965-07-06
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Granted: 1969-04-15
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Expires: 1985-07-06
Abstract
No abstract record available.
Inventors
- 👤 William R George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:42
CPC Classifications
E; E04; E04F; E04F15/00; E04F15/02; E04F15/022; B; B44; B44C; B44C1/00; B44C1/26; B44C5/00; B44C5/04; B44C5/0469; B44C5/0492; E04F15/04; E04F15/041; E04F15/043; E04F15/045; E04F15/046; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/109; Y10T428/00; Y10T428/16; Y10T428/161; Y10T428/163; Y10T428/164; Y10T428/167; Y10T428/24; Y10T428/24628; Y10T428/24736
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US186180A
Cited
US2831794A
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US1480880A
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US1935480A
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US2034313A
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US2139880A
Cited
US2287573A
Cited
US2982042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |