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US2841004A
Expired / Lapsed
US
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Self-sealing wall tiles
Assignee: Individual
•
Filing: 1952-08-21
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Granted: 1958-07-01
•
Expires: 1972-08-21
Abstract
No abstract record available.
Inventors
- 👤 Maccaferri Mario
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:02
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0885
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB434297A
Cited
US723979A
Cited
GB190903727A
Cited
FR446435A
Cited
US1830319A
Cited
FR763239A
Cited
US2156149A
Cited
GB615609A
Cited
US2490577A
Cited
FR972246A
Cited
US2627744A
Cited
US2666373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |