US738950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireproof floor and ceiling construction.
Assignee: CEMENTAL FIREPROOFING Co
•
Filing: 1902-09-22
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Granted: 1903-09-15
•
Expires: 1922-09-22
Abstract
No abstract record available.
Inventors
- 👤 John T Simpson
- 👤 Marshall Ney Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:08
CPC Classifications
E; E04; E04B; E04B5/00; E04B5/16; E04B5/17; E04B5/23; E04B5/29; Y; Y10; Y10S; Y10S52/00; Y10S52/08
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) | 1906-09-14 | 1907-03-16 | 1907-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-09-14 | 1911-03-16 | 1911-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-09-14 | 1915-03-16 | 1915-09-15 | $7700.00 | Window Closed / Lapsed |