US2841203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal insulation
Assignee: Mirror Insulation Co Inc
•
Filing: 1954-07-13
•
Granted: 1958-07-01
•
Expires: 1974-07-13
Abstract
No abstract record available.
Inventors
- 👤 George E Gronemeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:17
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/06; F16L59/08; F16L59/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US534473A
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US926423A
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US1340332A
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DE508731C
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US2050663A
Cited
US2078606A
Cited
US2578600A
Cited
US2613166A
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 |