Patent US2688152A successfully refreshed from Google Patents.
US2688152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for making foam rubber mattresses and the like
Assignee: MARCO Co Inc
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Filing: 1950-06-14
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Granted: 1954-09-07
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Expires: 1970-06-14
Abstract
No abstract record available.
Inventors
- 👤 Marco John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:53
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/20; B29C44/32; B29C44/334; B29C44/26; B29C44/329; B29C44/332; B29C59/00; B29C59/02; B29K; B29K2021/00; B29K2105/00; B29K2105/0058; B29K2105/0064; B29K2105/06; B29K2105/16; B29L; B29L2009/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1221890A
Cited
US1469420A
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GB446300A
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US2206056A
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US2171805A
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US2141063A
Cited
US2290614A
Cited
US2288095A
Cited
US2493194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |