US1409984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor construction
Assignee: WHITACRE GREER FIREPROOFING Co
•
Filing: 1917-06-15
•
Granted: 1922-03-21
•
Expires: 1937-06-15
Abstract
No abstract record available.
Inventors
- 👤 John J Whitacre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:45
CPC Classifications
E; E04; E04B; E04B5/00; E04B5/44; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19074; Y10T74/19079; Y10T74/19084
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1925-03-20 | 1925-09-19 | 1926-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-03-20 | 1929-09-19 | 1930-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-03-20 | 1933-09-19 | 1934-03-21 | $7700.00 | Window Closed / Lapsed |