US2472533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mica base heating sheet
Assignee: Individual
•
Filing: 1945-12-06
•
Granted: 1949-06-07
•
Expires: 1965-12-06
Abstract
No abstract record available.
Inventors
- 👤 Moses D Heyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:59
CPC Classifications
D; D06; D06F; D06F75/00; D06F75/08; D06F75/24; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/251
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US395950A
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US477708A
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US991841A
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US1335295A
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US1340795A
Cited
US1663810A
Cited
US1776191A
Cited
US1701386A
Cited
US1929396A
Cited
US2405576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |