Patent Application
Provisional
Small
App. No. 61/273,182
· Confirmation No. 5398
Auditory eigenfunction systems and methods
Inventor:
Lester F. Ludwig
Provisional Application Expired
Inventors
Lester F. Ludwig
Belmont, CA
Prosecution
- Confirmation No.
- 5398
Child
Claims priority from a provisional application
→
App. 12/849,013
· US 8,620,643
Filed 2010-08-02
· Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362
Child
Claims priority from a provisional application
→
App. 14/089,605
· US 9,613,617
Filed 2013-11-25
· Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362
Child
Claims priority from a provisional application
→
App. 15/469,429
· US 9,990,930
Filed 2017-03-24
· Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362
Child
Claims priority from a provisional application
→
App. 15/997,539
· US 10,832,693
Filed 2018-06-04
· Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362
Child
Claims priority from a provisional application
→
App. 17/094,562
Filed 2020-11-10
· Abandoned -- Incomplete Application (Pre-examination)
from
LUDWIG, LESTER F
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded 2017-06-09
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this application's details
Quick Facts
- App. No.
- 61/273,182
- Filed
- 2009-07-31
External Links