US1974819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for suspending insulating walls and ceilings
Assignee: Individual
•
Filing: 1932-02-25
•
Granted: 1934-09-25
•
Expires: 1952-02-25
Abstract
No abstract record available.
Inventors
- 👤 Albert B Koerner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:24
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0801; E04F13/0803; E04F13/081; E04F13/0821; E04F13/0823; E04F13/0832; E04F13/0833; E04F13/0841; E04F13/0844; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44641; Y10T24/44769; Y10T24/44906; Y10T24/44915
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) | 1937-09-24 | 1938-03-26 | 1938-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-09-24 | 1942-03-26 | 1942-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-09-24 | 1946-03-26 | 1946-09-25 | $7700.00 | Window Closed / Lapsed |