US3376681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace wall of blocks with embedded fastening elements
Assignee: Quigley Co Inc
•
Filing: 1965-03-08
•
Granted: 1968-04-09
•
Expires: 1985-03-08
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Demaison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:48
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/14; F27D1/145; F27D1/147; F27D1/04; F27D1/06; F27D1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3187694A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |