US3515611A
Expired / Lapsed
US
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Method for cementing chemically resistant tiles
Assignee: HEINZ JOACHIM MUHLBERG
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Filing: 1968-02-08
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Granted: 1970-06-02
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Expires: 1988-02-08
Abstract
No abstract record available.
Inventors
- 👤 Heinz-Joachim Muhlberg
- 👤 Eckhard Schacht
- 👤 Josef Brach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:14
CPC Classifications
E; E04; E04F; E04F15/00; E04F15/02; E04F15/10; C; C09; C09D; C09D5/00; C09D5/008; E04F13/00; E04F13/07; E04F13/08; E04F13/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |