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US3230283A
Expired / Lapsed
US
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Method of preparing tile surfaces
Assignee: Ayer-Mccarel Clay Co Inc
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Filing: 1963-04-10
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Granted: 1966-01-18
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Expires: 1983-04-10
Abstract
No abstract record available.
Inventors
- 👤 Calvin S Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:13
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/52; C04B41/80; C04B41/81; C04B41/89
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1867294A
Cited
US2683096A
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US2774681A
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US2856368A
Cited
US2877532A
Cited
US2855655A
Cited
US3090094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |