US2351993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building construction
Assignee: Johns Manville Corp
•
Filing: 1942-02-19
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Granted: 1944-06-20
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Expires: 1962-02-19
Abstract
No abstract record available.
Inventors
- 👤 William S Miles
- 👤 Paul A Voigt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:39
CPC Classifications
E; E04; E04D; E04D1/00; E04D1/29; E04D1/2907; E04D1/2914; E04D1/2918; E04D1/34; E04D2001/3408; E04D2001/3423; E04D2001/3452; E04D2001/3464; E04D2001/3467; E04D2001/3488; E04D2001/3494; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49938; Y10T29/49943; Y10T29/49972
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-06-20 | 1947-12-20 | 1948-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-06-20 | 1951-12-20 | 1952-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-06-20 | 1955-12-20 | 1956-06-20 | $7700.00 | Window Closed / Lapsed |