US3449190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for the production of mattress and cushion constructions
Assignee: Wood Conversion Co
•
Filing: 1966-03-14
•
Granted: 1969-06-10
•
Expires: 1986-03-14
Abstract
No abstract record available.
Inventors
- 👤 Edward L Bronstien Jr
- 👤 Richard A Fisher
- 👤 George Gold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:45
CPC Classifications
B; B21; B21F; B21F33/00; B21F33/04; B68; B68G; B68G9/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057; Y10T156/1084; Y10T156/1089; Y10T156/1092; Y10T156/1093; Y10T156/1095; Y10T156/12; Y10T156/1317; Y10T156/1343
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2372617A
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US2556787A
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US2771923A
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US2862846A
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CH337650A
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US3106503A
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US3081077A
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US3099844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |