Patent US2385056A successfully refreshed from Google Patents.
US2698536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam rubber form for use in laying masonry walls
Assignee: Individual
•
Filing: 1952-10-10
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Granted: 1955-01-04
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Expires: 1972-10-10
Abstract
No abstract record available.
Inventors
- 👤 Alan L Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:01
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/06; E04G11/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US752697A
Cited
US1054635A
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US726506A
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US860927A
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US1058674A
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US1742103A
Cited
FR930435A
Cited
US2648974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |